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Archemastrie

33 of 34 parts in The Mathematicall Praeface to the Elements of Geometrie by John Dee

Original

Now end I, with Archemastrie. Which name, is not so new, as this Arte is rare. For an other Arte, vnder this, a degree (for skill and power) hath bene indued with this English name before. And yet, this, may serue for our purpose, sufficiently, at this present. This Arte, teacheth to bryng to actuall experience sensible, all worthy conclusions by all the Artes Mathematicall purposed, & by true Naturall Philosophie concluded: & both addeth to them a farder scope, in the termes of the same Artes, & also by hys propre Method, and in peculier termes, procedeth, with helpe of the foresayd Artes, to the performance of complet Experiẽces, which of no particular Art, are hable (Formally) to be challenged. If you remember, how we considered Architecture, in respect of all common handworkes: some light may you haue, therby, to vnderstand the Souerainty and propertie of this Science. Science I may call it, rather, then an Arte: for the excellency and Mastershyp it hath, ouer so many, and so mighty Artes and Sciences. And bycause it procedeth by Experiences, and searcheth forth the causes of Conclusions, by Experiences: and also putteth the Conclusions them selues, in Experience, it is named of some, Scientia Experimentalis. The Experimentall Science. Nicolaus Cusanus termeth it so, in hys Experimentes Statikall, And an other Philosopher,

of this land Natiue (the floure of whose worthy fame, can neuer dye nor wither) did write therof largely, at the request of Clement the sixt. The Arte carrieth with it, a wonderfull Credit: By reason, it certefieth, sensibly, fully, and completely to the vtmost power of Nature, and Arte. This Arte, certifieth by Experience complete and absolute: and other Artes, with their Argumentes, and Demonstrations, persuade: and in wordes, proue very well their Conclusions. *

(☞)

But wordes, and Argumentes, are no sensible certifying: nor the full and finall frute of Sciences practisable. And though some Artes, haue in them, Experiences, yet they are not complete, and brought to the vttermost, they may be stretched vnto, and applyed sensibly. As for example: the Naturall Philosopher disputeth and maketh goodly shew of reason: And the Astronomer, and the Opticall Mechanicien, put some thynges in Experience: but neither, all, that they may: nor yet sufficiently, and to the vtmost, those, which they do, There, then, the Archemaster steppeth in, and leadeth forth on, the Experiences, by order of his doctrine Experimentall, to the chief and finall power of Naturall and Mathematicall Artes. Of two or three men, in whom, this Description of Archemastry was Experimentally, verified, I haue read and hard: and good record, is of their such perfection. So that, this Art, is no fantasticall Imagination: as some Sophister, might, Cum suis Insolubilibus, make a florish: and dassell your Imagination: and dash your honest desire and Courage, from beleuing these thinges, so vnheard of, so meruaylous, & of such Importance. Well: as you will. I haue forewarned you. I haue done the part of a frende: I haue discharged my Duety toward God: for my small Talent, at hys most mercyfull handes receiued. To this Science, doth the Science Alnirangiat, great Seruice. Muse nothyng of this name. I chaunge not the name, so vsed, and in Print published by other: beyng a name, propre to the Science. Vnder this, commeth Ars Sintrillia, by Artephius, briefly written. But the chief Science, of the Archemaster, (in this world) as yet knowen, is an other (as it were) OPTICAL Science: wherof, the name shall be told (God willyng) when I shall haue some, (more iust) occasion, therof, to Discourse.

Here, I must end, thus abruptly (Gentle frende, and vnfayned louer of honest and necessary verities.) For, they, who haue (for your sake, and vertues cause) requested me, (an old forworne Mathematicien) to take pen in hand: (through the confidence they reposed in my long experience: and tryed sincerity) for the declaryng and reportyng somewhat, of the frute and commodity, by the Artes Mathematicall, to be atteyned vnto: euen they, Sore agaynst their willes, are forced, for sundry causes, to satisfie the workemans request, in endyng forthwith: He, so feareth this, so new an attempt, & so costly: And in matter so slenderly (hetherto) among the common Sorte of Studentes, considered or estemed.

And where I was willed, somewhat to alledge, why, in our vulgare Speche, this part of the Principall Science of Geometrie, called Euclides Geometricall Elementes, is published, to your handlyng: being vnlatined people, and not Vniuersitie Scholers: Verily, I thinke it nedelesse.

(1.)

For, the Honour, and Estimation of the Vniuersities, and Graduates, is, hereby, nothing diminished. Seing, from, and by their Nurse Children, you receaue all this Benefite: how great soeuer it be.

(2.)

Neither are their Studies, hereby, any whit hindred. No more, then the Italian Vniuersities, as Academia Bononiensis, Ferrariensis, Florentina, Mediolanensis, Patauina, Papiensis, Perusina, Pisana, Romana, Senensis, or any one of them, finde them selues, any deale, disgraced, or their Studies any thing hindred, by Frater Lucas de Burgo, or by Nicolaus Tartalea, who in vulgar Italian language, haue published, not onely Euclides Geometrie, but of Archimedes somewhat: and in Arithmetike and Practicall Geometrie, very large volumes, all in their vulgar speche. Nor in Germany haue the famous Vniuersities, any thing bene discontent with Albertus Durerus, his Geometricall Institutions in Dutch: or with Gulielmus Xylander, his learned translation of the first sixe bookes of Euclide, out of the Greke into the high Dutch. Nor with Gualterus H. Riffius, his Geometricall Volume: very diligently translated into the high Dutch tounge, and published. Nor yet the Vniuersities of Spaine, or Portugall, thinke their reputation to be decayed: or suppose any their Studies to be hindred by the Excellent P. Nonnius, his Mathematicall workes, in vulgare speche by him put forth. Haue you not, likewise, in the French tounge, the whole Mathematicall Quadriuie? and yet neither Paris, Orleance, or any of the other Vniuersities of Fraunce, at any time, with the Translaters, or Publishers offended: or any mans Studie thereby hindred?

(3.)

And surely, the Common and Vulgar Scholer (much more, the Gramarian) before his comming to the Vniuersitie, shall (or may) be, now (according to Plato his Counsell) sufficiently instructed in Arithmetike and Geometrie, for the better and easier learning of all maner of Philosophie, Academicall, or Peripateticall. And by that meanes, goe more cherefully, more skilfully, and spedily forwarde, in his Studies, there to be learned. And, so, in lesse time, profite more, then (otherwise) he should, or could do.

(4.)

Also many good and pregnant Englishe wittes, of young Gentlemen, and of other, who neuer intend to meddle with the profound search and Studie of Philosophie (in the Vniuersities to be learned) may neuerthelesse, now, with more ease and libertie, haue good occasion, vertuously to occupie the sharpnesse of their wittes: where, els (perchance) otherwise, they would in fond exercises, spend (or rather leese) their time: neither seruing God: nor furdering the Weale, common or priuate.

(5.)

And great Comfort, with good hope, may the Vniuersities haue, by reason of this Englishe Geometrie, and Mathematicall Præface, that they (hereafter) shall be the more regarded, esteemed, and resorted vnto. For, when it shall be knowen and reported, that of the Mathematicall Sciences onely, such great Commodities are ensuing (as I haue specified): and that in dede, some of you vnlatined Studentes, can be good witnesse, of such rare fruite by you enioyed (thereby): as either, before this, was not heard of: or els, not so fully credited: “Well, may all men coniecture, that farre greater ayde, and better furniture, to winne to the Perfection of all Philosophie,

(Vniuersities.)

may in the Vniuersities be had: being the Storehouses & Threasory of all Sciences,

(☞)

and all Artes, necessary for the best, and most noble State of Common Wealthes.”

(6.)

Besides this, how many a Common Artificer, is there, in these Realmes of England and Ireland, that dealeth with Numbers, Rule, & Cumpasse: Who, with their owne Skill and experience, already had, will be hable (by these good helpes and informations) to finde out, and deuise, new workes, straunge Engines, and Instrumentes: for sundry purposes in the Common Wealth? or for priuate pleasure? and for the better maintayning of their owne estate? I will not (therefore) fight against myne owne shadowe. For, no man (I am sure) will open his mouth against this Enterprise. No mã (I say) who either hath Charitie toward his brother (and would be glad of his furtherance in vertuous knowledge): or that hath any care & zeale for the bettering of the Cõmon state of this Realme. Neither any, that make accompt, what the wiser sort of men (Sage and Stayed) do thinke of them. To none (therefore) will I make any Apologie, for a vertuous acte doing: and for cõmending, or setting forth, Profitable Artes to English men, in the English toung. “But, vnto God our Creator, let vs all be thankefull: for that, As he, of his Goodnes, by his Powre, and in his wisedome,

(☞)

hath Created all thynges, in Number, Waight, and Measure: So, to vs, of hys great Mercy, he hath reuealed Meanes, whereby, to atteyne the sufficient and necessary knowledge of the foresayd hys three principall Instrumentes: Which Meanes, I haue abundantly proued vnto you, to be the Sciences and Artes Mathematicall.”

And though I haue ben pinched with straightnes of tyme: that, no way, I could so pen downe the matter (in my Mynde) as I determined: hopyng of conuenient laysure: Yet. if vertuous zeale, and honest Intent prouoke and bryng you to the readyng and examinyng of this Compendious treatise, I do not doute, but, as the veritie therof (accordyng to our purpose) will be euident vnto you: So the pith and force therof, will persuade you: and the wonderfull frute therof, highly pleasure you. And that you may the easier perceiue, and better remember, the principall pointes, whereof my Preface treateth,

(The Ground platt of this Præface in a Table.)

I will giue you the Groundplatt of my whole discourse, in a Table annexed: from the first to the last, somewhat Methodically contriued.

If Hast, hath caused my poore pen, any where, to stumble: You will, (I am sure) in part of recompence, (for my earnest and sincere good will to pleasure you), Consider the rockish huge mountaines, and the perilous vnbeaten wayes, which (both night and day, for the while) it hath toyled and labored through, to bryng you this good Newes, and Comfortable profe, of Vertues frute.

So, I Commit you vnto Gods Mercyfull direction, for the rest: hartely besechyng hym, to prosper your Studyes, and honest Intentes: to his Glory, & the Commodity of our Countrey. Amen.

Written at my poore House At Mortlake.

Anno. 1570. February. 9.

J. DEE

Musean translation

Modern machine-assisted Musean edition by Mouseia, from Dee's 1570 Praeface. Latin quotations and titles are translated into English, using Dee's own English glosses where provided. Printer's type-size markup is normalized; marginal notes are kept as asides. Billingsley's separate address is omitted. Uncertain readings are marked.

Now I end, with Archemastrie. The name is not so new as the art is rare; for another art, a degree below this in skill and power, had already been given this English name. And yet this will serve our purpose well enough for now. This art teaches how to bring to actual sensible experience all worthy conclusions proposed by all the mathematical arts and concluded by true natural philosophy; and it both adds to them a further scope in the terms of the same arts, and also by its own method and in peculiar terms proceeds, with the help of the aforesaid arts, to the performance of complete experiences which of no particular art can formally be challenged. If you remember how we considered architecture in respect of all common handiworks, some light you may have from that toward understanding the sovereignty and property of this science. I may call it a science rather than an art, for the excellence and mastery it has over so many and so mighty arts and sciences. And because it proceeds by experiences, and searches out the causes of conclusions by experiences, and also puts the conclusions themselves into experience, it is named by some the Experimental Science. Nicolaus Cusanus calls it so in his Statical Experiments, and another philosopher, native to this land (the flower of whose worthy fame can never die nor wither), wrote at length on it at the request of Clement the Sixth. The art carries with it wonderful credit, for it certifies sensibly, fully, and completely, to the utmost power of nature and art. This art certifies by complete and absolute experience; other arts, with their arguments and demonstrations, persuade, and in words prove their conclusions very well.

But words and arguments are no sensible certification, nor the full and final fruit of the sciences as they are practiced. And though some arts have experiences in them, yet they are not complete, nor brought to the utmost they may be stretched to and applied sensibly. As for example: the natural philosopher disputes and makes a goodly show of reason; and the astronomer and the optical mechanician put some things into experience—but neither all that they may, nor yet those they do, sufficiently and to the utmost. There then the Archemaster steps in, and leads the experiences on, by order of his experimental doctrine, to the chief and final power of natural and mathematical arts. Of two or three men in whom this description of Archemastry was experimentally verified, I have read and heard, and there is good record of such perfection in them. So that this art is no fantastic imagination—as some sophister, with his Insolubles, might flourish, and dazzle your imagination, and dash your honest desire and courage from believing these things so unheard-of, so marvelous, and of such importance. Well: as you will. I have warned you. I have done the part of a friend: I have discharged my duty toward God, for my small talent received at his most merciful hands. To this science does the science Alnirangiat render great service. Do not wonder at this name: I do not change a name so used, and published in print by others, being a name proper to the science. Under this comes Ars Sintrillia [title unclear in the source], briefly written by Artephius. But the chief science of the Archemaster (in this world) as yet known is another (as it were) optical science: of which the name shall be told (God willing) when I shall have some more just occasion to discourse of it.

Here I must end, thus abruptly (gentle friend, and unfeigned lover of honest and necessary verities). For they who have, for your sake and virtue's cause, requested me (an old, worn-out mathematician) to take pen in hand (through the confidence they placed in my long experience and tried sincerity), for the declaring and reporting somewhat of the fruit and commodity to be attained by the mathematical arts: even they, sore against their wills, are forced, for sundry causes, to satisfy the workman's request by ending without delay; he so fears this so new an attempt, and so costly, and in a matter so slenderly hitherto considered or esteemed among the common sort of students.

And since I was urged to set forth some reason why, in our vulgar speech, this part of the principal science of geometry, called Euclid's Geometrical Elements, is published for your handling—you who have no Latin, and are not university scholars—truly, I think it needless.

(1.)

For the honor and estimation of the universities and graduates is hereby nothing diminished, seeing that from them, and by those they have reared, you receive all this benefit, however great it be.

(2.)

Neither are their studies in the least hindered: no more than the Italian universities, as the academies of Bologna, Ferrara, Florence, Milan, Padua, Pavia, Perugia, Pisa, Rome, and Siena, or any one of them, find themselves at all disgraced, or their studies anything hindered, by Friar Lucas de Burgo or by Nicolaus Tartalea, who in the vulgar Italian language have published not only Euclid's Geometry, but somewhat of Archimedes: and in arithmetic and practical geometry very large volumes, all in their vulgar speech. Nor in Germany have the famous universities been anything discontent with Albertus Durerus, his geometrical institutions in German; or with Gulielmus Xylander, his learned translation of the first six books of Euclid out of the Greek into high German; nor with Gualterus H. Riffius, his geometrical volume, very diligently translated into the German tongue and published. Nor yet do the universities of Spain or Portugal think their reputation to be decayed, or suppose any of their studies hindered by the excellent P. Nonnius, his mathematical works put forth in vulgar speech. Have you not, likewise, in the French tongue the whole mathematical quadrivium? and yet have neither Paris, Orleans, nor any of the other universities of France ever been offended with the translators or publishers, or any man's study by that hindered?

(3.)

And surely the common and ordinary scholar (much more the grammarian) before coming to the university shall (or may) now be sufficiently instructed, according to Plato's counsel, in arithmetic and geometry, for the better and easier learning of all manner of philosophy, academic or peripatetic; and by that means go forward more cheerfully, more skillfully, and more speedily in his studies there to be learned; and so, in less time, profit more than otherwise he should or could do.

(4.)

Also many good and pregnant English wits, of young gentlemen and of others who never intend to meddle with the profound search and study of philosophy (to be learned in the universities), may nevertheless now, with more ease and liberty, have good occasion to occupy the sharpness of their wits virtuously: where otherwise, perhaps, they would spend their time—or rather lose it—in foolish exercises, neither serving God nor furthering the common or private good.

(5.)

And great comfort, with good hope, may the universities have, by reason of this English geometry and mathematical preface, that they hereafter shall be the more regarded, esteemed, and resorted to. For when it shall be known and reported that of the mathematical sciences only such great commodities are ensuing as I have specified, and that indeed some of you students with no Latin can be good witnesses of such rare fruit enjoyed by you by that, as either was not heard of before this, or else not so fully credited: "Well may all men conjecture that far greater aid and better furniture, to win to the perfection of all philosophy,

(Universities.)

may in the universities be had: being the storehouses and treasury of all sciences, and all arts necessary for the best and most noble state of commonwealths."

(6.)

Besides this, how many a common artisan is there in these realms of England and Ireland who deals with numbers, rule, and compass: who, with their own skill and experience already had, will be able (by these good helps and information) to find out and devise new works, strange engines, and instruments, for sundry purposes in the commonwealth? or for private pleasure? and for the better maintaining of their own estate? I will not therefore fight against my own shadow. For no man (I am sure) will open his mouth against this enterprise. No man (I say) who either has charity toward his brother (and would be glad of his furtherance in virtuous knowledge), or who has any care and zeal for the bettering of the common state of this realm. Neither any who make account of what the wiser sort of men (sage and steady) think of them. To none, therefore, will I make any apology for doing a virtuous act, and for commending or setting forth profitable arts to English men in the English tongue. "But to God our Creator let us all be thankful: for that, as he, of his goodness, by his power, and in his wisdom, has created all things in number, weight, and measure: so, to us, of his great mercy, he has revealed means by which to attain the sufficient and necessary knowledge of his three principal instruments aforesaid: which means I have abundantly proved to you to be the sciences and arts mathematical."

And though I have been pinched with straightness of time, that in no way I could pen down the matter (in my mind) as I determined, hoping for convenient leisure: yet if virtuous zeal and honest intent provoke and bring you to the reading and examining of this compendious treatise, I do not doubt but as the truth of it (according to our purpose) will be evident to you, so the pith and force of it will persuade you, and the wonderful fruit of it highly please you. And that you may the easier perceive, and better remember, the principal points of which my preface treats,

(The ground plan of this preface in a table.)

I will give you the ground plan of my whole discourse, in a table annexed, from the first to the last, somewhat methodically contrived.

If haste has caused my poor pen anywhere to stumble, you will (I am sure), in partial recompense for my earnest and sincere good will in pleasing you, consider the huge rocky mountains and the perilous unbeaten ways through which it (both night and day the while) has toiled and labored to bring you this good news and comfortable proof of virtue's fruit.

So I commit you to God's merciful direction for the rest: heartily beseeching him to prosper your studies and honest intentions, to his glory and the benefit of our country. Amen.

Written at my poor house at Mortlake.

In the year 1570. February 9.

J. Dee

Plain English translation

Modern machine-assisted Plain English edition by Mouseia, from Dee's 1570 Praeface. Latin quotations and titles are translated into English, using Dee's own English glosses where provided. Printer's type-size markup is normalized; marginal notes are kept as asides. Billingsley's separate address is omitted. Uncertain readings are marked.

Now I end with Archemastrie. The name is not so new as this art is rare. For another art, a degree below it in skill and power, has already been given this English name. And yet this may serve our purpose well enough at present. This art teaches how to bring to actual sensible experience all worthy conclusions proposed by all the mathematical arts and concluded by true natural philosophy; and it both adds to them a further scope in the terms of the same arts, and also by its own method, in peculiar terms, proceeds with the help of the said arts to the performance of complete experiences which cannot (formally) be challenged from any particular art. If you remember how we considered architecture in respect of all common handiwork, you may get some light from that toward understanding the sovereignty and property of this science. I may call it a science rather than an art, for the excellence and mastery it has over so many and so mighty arts and sciences. And because it proceeds by experiences, and searches out the causes of conclusions by experiences, and also puts the conclusions themselves into experience, some name it the experimental science. Nicolaus Cusanus calls it so in his Experimentes Statikall, and another philosopher,

native to this land (the flower of whose worthy fame can never die or wither) wrote about it at length at the request of Clement the Sixth. The art carries with it wonderful credit, because it certifies sensibly, fully, and completely, to the utmost power of nature and art. This art certifies by complete and absolute experience; other arts, with their arguments and demonstrations, persuade, and in words prove their conclusions very well.

☞

But words and arguments are no sensible certifying, nor the full and final fruit of sciences that can be practiced. And though some arts have experiences in them, they are not complete, nor brought to the uttermost they may be stretched to, and applied sensibly. For example: the natural philosopher disputes and makes a goodly show of reason, and the astronomer and the optical mechanician put some things into experience, but neither all that they can, nor yet fully and to the utmost those they do. There the Archemaster steps in and leads the experiences on, by order of his experimental doctrine, to the chief and final power of natural and mathematical arts. Of two or three men in whom this description of Archemastry was verified in practice I have read and heard, and good record exists of such perfection in them. So this art is no fantastic imagination, as some sophister might flourish with his insolubles, dazzle your imagination, and dash your honest desire and courage from believing these things so unheard-of, so marvelous, and of such importance. Well, as you will. I have forewarned you. I have done the part of a friend; I have discharged my duty toward God for the small talent I received from his most merciful hands. To this science the science Alnirangiat does great service. Do not wonder at this name: I do not change the name so used and published in print by others, being a name proper to the science. Under this comes Ars Sintrillia [title unclear in the source], by Artephius, briefly written. But the chief science of the Archemaster (in this world) as yet known is another science, as it were, optical; its name shall be told (God willing) when I have some more just occasion to discourse of it.

Here I must end, thus abruptly (gentle friend, and unfeigned lover of honest and necessary truths). For those who have (for your sake and virtue's sake) requested me (an old, worn-out mathematician) to take pen in hand, through the confidence they placed in my long experience and tried sincerity, for the declaring and reporting somewhat of the fruit and benefit to be attained by the mathematical arts: even they, very much against their own wills, are forced for various reasons to satisfy the workman's request by ending at once. He fears so new an attempt and so costly, and a matter so little (so far) considered or esteemed among the common sort of students.

And whereas I was pressed to allege some reason why, in our common speech, this part of the principal science of geometry, called Euclid's Geometric Elements, is published for you to handle, being people without Latin and not university scholars: truly I think it needless.

(1.)

For the honor and standing of the universities and their graduates is in no way diminished by this, seeing that you receive all this benefit from and through their nurslings, however great it be.

(2.)

Neither are their studies in any way hindered by it, any more than the Italian universities, as the academies of Bologna, Ferrara, Florence, Milan, Padua, Pavia, Perugia, Pisa, Rome, and Siena, or any one of them, find themselves at all disgraced or their studies hindered in the least by Friar Lucas de Burgo or by Nicolaus Tartalea, who in the common Italian language have published not only Euclid's geometry but something of Archimedes, and in arithmetic and practical geometry very large volumes, all in their common speech. Nor have the famous universities in Germany been at all displeased with the geometric institutions of Albertus Durerus in Dutch; nor with the learned translation by Gulielmus Xylander of the first six books of Euclid from Greek into high Dutch; nor with the geometric volume of Gualterus H. Riffius, very diligently translated into the high Dutch tongue and published. Nor do the universities of Spain or Portugal think their reputation decayed, or suppose any of their studies hindered by the excellent mathematical works of P. Nonnius put forth in common speech. Do you not likewise have in French the whole mathematical quadrivium? And yet neither Paris, Orleans, nor any of the other universities of France has at any time been offended with the translators or publishers, nor has any person's study been hindered by it?

(3.)

And surely the common and ordinary scholar (and much more the grammarian) before coming to the university can (or may) now be instructed well enough (according to Plato's counsel) in arithmetic and geometry, for the better and easier learning of all manner of philosophy, academic or Peripatetic. And by that means go on more cheerfully, more skillfully, and more quickly in his studies there to be learned, and so profit more in less time than otherwise he should or could do.

(4.)

Also many good and fertile English wits, of young gentlemen and of others who never intend to meddle with the profound search and study of philosophy (to be learned in the universities), may nevertheless now, with more ease and liberty, have good occasion to put the sharpness of their wits to virtuous use; where otherwise they might (perhaps) spend their time in foolish exercises, or rather lose it, serving neither God nor furthering the common or private good.

(5.)

And great comfort with good hope may the universities have from this English geometry and mathematical preface, that they hereafter shall be more regarded, esteemed, and resorted to. For when it shall be known and reported that from the mathematical sciences only such great benefits follow as I have specified, and that indeed some of you students without Latin can be good witnesses of such rare fruit enjoyed by you by that, as either was not heard of before or else not so fully credited: "Well, may all men conjecture that far greater aid and better furniture to win to the perfection of all philosophy,

Universities.

may be had in the universities, being the storehouses and treasury of all sciences,

☞

and all arts necessary for the best and most noble state of commonwealths."

(6.)

Besides this, how many a common craftsman is there in these realms of England and Ireland that deals with numbers, rule, and compass, who, with their own skill and experience already had, will be able (by these good helps and information) to find out and devise new works, strange engines, and instruments: for various purposes in the commonwealth, or for private pleasure, and for the better maintaining of their own estate? I will not (therefore) fight against my own shadow. For no man, I am sure, will open his mouth against this enterprise; no one, I say, who either has charity toward his brother (and would be glad to further him in virtuous knowledge), or who has any care and zeal for the bettering of the common state of this realm; neither any who make account of what the wiser sort of men (sage and steady) think of them. To none, therefore, will I make any apology for doing a virtuous act, and for commending or setting forth profitable arts to English people in the English tongue. "But to God our Creator let us all be thankful: that as he, of his goodness, by his power, and in his wisdom,

☞

has created all things in number, weight, and measure; so to us, of his great mercy, he has revealed means by which to attain the sufficient and necessary knowledge of the said three principal instruments of his: which means I have abundantly proved to you to be the sciences and mathematical arts."

And though I have been pressed by the straightness of time, so that in no way could I set the matter down (in my mind) as I determined, hoping for convenient leisure: yet if virtuous zeal and honest intent provoke and bring you to the reading and examining of this compendious treatise, I do not doubt but that, as the truth of it (according to our purpose) will be evident to you, so its pith and force will persuade you, and its wonderful fruit highly please you. And that you may the more easily perceive and better remember the principal points my preface treats of,

The ground plan of this preface in a table.

I will give you the ground plan of my whole discourse in an annexed table, from the first to the last, somewhat methodically devised.

If haste has made my poor pen stumble anywhere, you will (I am sure) partly repay me, for my earnest and sincere good will to please you, by considering the rocky, huge mountains and the perilous, untrodden ways it has toiled and labored through (night and day the while) to bring you this good news and comfortable proof of virtue's fruit.

So I commit you to God's merciful direction for the rest, heartily beseeching him to prosper your studies and honest intents, to his glory and the benefit of our country. Amen.

Written at my poor house at Mortlake.

In the year 1570. February 9.

J. DEE

About this section

Archemastrie is part of The Mathematicall Praeface to the Elements of Geometrie by John Dee. This page sets the 16th-century English original beside 2 direct-source translations, so any line can be checked against the source. It is part 33 of 34 in the work, which is kept in the European tradition.

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