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Discourse on Method, A
PART I
Rene Descartes
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       PART I
       Good sense is, of all things among men, the most equally distributed; for
       every one thinks himself so abundantly provided with it, that those even
       who are the most difficult to satisfy in everything else, do not usually
       desire a larger measure of this quality than they already possess. And in
       this it is not likely that all are mistaken the conviction is rather to be
       held as testifying that the power of judging aright and of distinguishing
       truth from error, which is properly what is called good sense or reason,
       is by nature equal in all men; and that the diversity of our opinions,
       consequently, does not arise from some being endowed with a larger share
       of reason than others, but solely from this, that we conduct our thoughts
       along different ways, and do not fix our attention on the same objects.
       For to be possessed of a vigorous mind is not enough; the prime requisite
       is rightly to apply it. The greatest minds, as they are capable of the
       highest excellences, are open likewise to the greatest aberrations; and
       those who travel very slowly may yet make far greater progress, provided
       they keep always to the straight road, than those who, while they run,
       forsake it.
       For myself, I have never fancied my mind to be in any respect more perfect
       than those of the generality; on the contrary, I have often wished that I
       were equal to some others in promptitude of thought, or in clearness and
       distinctness of imagination, or in fullness and readiness of memory. And
       besides these, I know of no other qualities that contribute to the
       perfection of the mind; for as to the reason or sense, inasmuch as it is
       that alone which constitutes us men, and distinguishes us from the brutes,
       I am disposed to believe that it is to be found complete in each
       individual; and on this point to adopt the common opinion of philosophers,
       who say that the difference of greater and less holds only among the
       accidents, and not among the forms or natures of individuals of the same
       species.
       I will not hesitate, however, to avow my belief that it has been my
       singular good fortune to have very early in life fallen in with certain
       tracks which have conducted me to considerations and maxims, of which I
       have formed a method that gives me the means, as I think, of gradually
       augmenting my knowledge, and of raising it by little and little to the
       highest point which the mediocrity of my talents and the brief duration of
       my life will permit me to reach. For I have already reaped from it such
       fruits that, although I have been accustomed to think lowly enough of
       myself, and although when I look with the eye of a philosopher at the
       varied courses and pursuits of mankind at large, I find scarcely one which
       does not appear in vain and useless, I nevertheless derive the highest
       satisfaction from the progress I conceive myself to have already made in
       the search after truth, and cannot help entertaining such expectations of
       the future as to believe that if, among the occupations of men as men, there
       is any one really excellent and important, it is that which I have chosen.
       After all, it is possible I may be mistaken; and it is but a little
       copper and glass, perhaps, that I take for gold and diamonds. I know how
       very liable we are to delusion in what relates to ourselves, and also how
       much the judgments of our friends are to be suspected when given in our
       favor. But I shall endeavor in this discourse to describe the paths I
       have followed, and to delineate my life as in a picture, in order that
       each one may also be able to judge of them for himself, and that in the
       general opinion entertained of them, as gathered from current report, I
       myself may have a new help towards instruction to be added to those I have
       been in the habit of employing.
       My present design, then, is not to teach the method which each ought to
       follow for the right conduct of his reason, but solely to describe the way
       in which I have endeavored to conduct my own. They who set themselves to
       give precepts must of course regard themselves as possessed of greater skill
       than those to whom they prescribe; and if they err in the slightest particular,
       they subject themselves to censure. But as this tract is put forth merely
       as a history, or, if you will, as a tale, in which, amid some examples worthy
       of imitation, there will be found, perhaps, as many more which it were
       advisable not to follow, I hope it will prove useful to some without being
       hurtful to any, and that my openness will find some favor with all.
       From my childhood, I have been familiar with letters; and as I was given
       to believe that by their help a clear and certain knowledge of all that is
       useful in life might be acquired, I was ardently desirous of instruction.
       But as soon as I had finished the entire course of study, at the close of
       which it is customary to be admitted into the order of the learned, I
       completely changed my opinion. For I found myself involved in so many
       doubts and errors, that I was convinced I had advanced no farther in all
       my attempts at learning, than the discovery at every turn of my own
       ignorance. And yet I was studying in one of the most celebrated schools in
       Europe, in which I thought there must be learned men, if such were
       anywhere to be found. I had been taught all that others learned there;
       and not contented with the sciences actually taught us, I had, in
       addition, read all the books that had fallen into my hands, treating of
       such branches as are esteemed the most curious and rare. I knew the
       judgment which others had formed of me; and I did not find that I was
       considered inferior to my fellows, although there were among them some who
       were already marked out to fill the places of our instructors. And, in
       fine, our age appeared to me as flourishing, and as fertile in powerful
       minds as any preceding one. I was thus led to take the liberty of judging
       of all other men by myself, and of concluding that there was no science in
       existence that was of such a nature as I had previously been given to believe.
       I still continued, however, to hold in esteem the studies of the schools.
       I was aware that the languages taught in them are necessary to the
       understanding of the writings of the ancients; that the grace of fable
       stirs the mind; that the memorable deeds of history elevate it; and, if
       read with discretion, aid in forming the judgment; that the perusal of all
       excellent books is, as it were, to interview with the noblest men of past
       ages, who have written them, and even a studied interview, in which are
       discovered to us only their choicest thoughts; that eloquence has
       incomparable force and beauty; that poesy has its ravishing graces and
       delights; that in the mathematics there are many refined discoveries
       eminently suited to gratify the inquisitive, as well as further all the
       arts an lessen the labour of man; that numerous highly useful precepts and
       exhortations to virtue are contained in treatises on morals; that theology
       points out the path to heaven; that philosophy affords the means of
       discoursing with an appearance of truth on all matters, and commands the
       admiration of the more simple; that jurisprudence, medicine, and the other
       sciences, secure for their cultivators honors and riches; and, in fine,
       that it is useful to bestow some attention upon all, even upon those
       abounding the most in superstition and error, that we may be in a position
       to determine their real value, and guard against being deceived.
       But I believed that I had already given sufficient time to languages, and
       likewise to the reading of the writings of the ancients, to their
       histories and fables. For to hold converse with those of other ages and
       to travel, are almost the same thing. It is useful to know something of
       the manners of different nations, that we may be enabled to form a more
       correct judgment regarding our own, and be prevented from thinking that
       everything contrary to our customs is ridiculous and irrational, a
       conclusion usually come to by those whose experience has been limited to
       their own country. On the other hand, when too much time is occupied in
       traveling, we become strangers to our native country; and the over
       curious in the customs of the past are generally ignorant of those of the
       present. Besides, fictitious narratives lead us to imagine the possibility
       of many events that are impossible; and even the most faithful histories,
       if they do not wholly misrepresent matters, or exaggerate their importance
       to render the account of them more worthy of perusal, omit, at least, almost
       always the meanest and least striking of the attendant circumstances; hence
       it happens that the remainder does not represent the truth, and that such as
       regulate their conduct by examples drawn from this source, are apt to fall
       into the extravagances of the knight-errants of romance, and to entertain
       projects that exceed their powers.
       I esteemed eloquence highly, and was in raptures with poesy; but I thought
       that both were gifts of nature rather than fruits of study. Those in whom
       the faculty of reason is predominant, and who most skillfully dispose their
       thoughts with a view to render them clear and intelligible, are always the
       best able to persuade others of the truth of what they lay down, though
       they should speak only in the language of Lower Brittany, and be wholly
       ignorant of the rules of rhetoric; and those whose minds are stored with
       the most agreeable fancies, and who can give expression to them with the
       greatest embellishment and harmony, are still the best poets, though
       unacquainted with the art of poetry.
       I was especially delighted with the mathematics, on account of the
       certitude and evidence of their reasonings; but I had not as yet a
       precise knowledge of their true use; and thinking that they but
       contributed to the advancement of the mechanical arts, I was astonished
       that foundations, so strong and solid, should have had no loftier
       superstructure reared on them. On the other hand, I compared the
       disquisitions of the ancient moralists to very towering and magnificent
       palaces with no better foundation than sand and mud: they laud the virtues
       very highly, and exhibit them as estimable far above anything on earth;
       but they give us no adequate criterion of virtue, and frequently that
       which they designate with so fine a name is but apathy, or pride,
       or despair, or parricide.
       I revered our theology, and aspired as much as any one to reach heaven:
       but being given assuredly to understand that the way is not less open to
       the most ignorant than to the most learned, and that the revealed truths
       which lead to heaven are above our comprehension, I did not presume to
       subject them to the impotency of my reason; and I thought that in order
       competently to undertake their examination, there was need of some special
       help from heaven, and of being more than man.
       Of philosophy I will say nothing, except that when I saw that it had been
       cultivated for many ages by the most distinguished men, and that yet there
       is not a single matter within its sphere which is not still in dispute,
       and nothing, therefore, which is above doubt, I did not presume to
       anticipate that my success would be greater in it than that of others; and
       further, when I considered the number of conflicting opinions touching a
       single matter that may be upheld by learned men, while there can be but
       one true, I reckoned as well-nigh false all that was only probable.
       As to the other sciences, inasmuch as these borrow their principles from
       philosophy, I judged that no solid superstructures could be reared on
       foundations so infirm; and neither the honor nor the gain held out by them
       was sufficient to determine me to their cultivation: for I was not, thank
       Heaven, in a condition which compelled me to make merchandise of science
       for the bettering of my fortune; and though I might not profess to scorn
       glory as a cynic, I yet made very slight account of that honor which I
       hoped to acquire only through fictitious titles. And, in fine, of false
       sciences I thought I knew the worth sufficiently to escape being deceived
       by the professions of an alchemist, the predictions of an astrologer, the
       impostures of a magician, or by the artifices and boasting of any of those
       who profess to know things of which they are ignorant.
       For these reasons, as soon as my age permitted me to pass from under the
       control of my instructors, I entirely abandoned the study of letters, and
       resolved no longer to seek any other science than the knowledge of myself,
       or of the great book of the world. I spent the remainder of my youth in
       traveling, in visiting courts and armies, in holding intercourse with men
       of different dispositions and ranks, in collecting varied experience, in
       proving myself in the different situations into which fortune threw me,
       and, above all, in making such reflection on the matter of my experience
       as to secure my improvement. For it occurred to me that I should find
       much more truth in the reasonings of each individual with reference to the
       affairs in which he is personally interested, and the issue of which must
       presently punish him if he has judged amiss, than in those conducted by a
       man of letters in his study, regarding speculative matters that are of no
       practical moment, and followed by no consequences to himself, farther,
       perhaps, than that they foster his vanity the better the more remote they
       are from common sense; requiring, as they must in this case, the exercise
       of greater ingenuity and art to render them probable. In addition, I had
       always a most earnest desire to know how to distinguish the true from the
       false, in order that I might be able clearly to discriminate the right
       path in life, and proceed in it with confidence.
       It is true that, while busied only in considering the manners of other
       men, I found here, too, scarce any ground for settled conviction, and
       remarked hardly less contradiction among them than in the opinions of the
       philosophers. So that the greatest advantage I derived from the study
       consisted in this, that, observing many things which, however extravagant
       and ridiculous to our apprehension, are yet by common consent received and
       approved by other great nations, I learned to entertain too decided a
       belief in regard to nothing of the truth of which I had been persuaded
       merely by example and custom; and thus I gradually extricated myself from
       many errors powerful enough to darken our natural intelligence, and
       incapacitate us in great measure from listening to reason. But after I had
       been occupied several years in thus studying the book of the world, and in
       essaying to gather some experience, I at length resolved to make myself an
       object of study, and to employ all the powers of my mind in choosing the
       paths I ought to follow, an undertaking which was accompanied with greater
       success than it would have been had I never quitted my country or my books. _