III. external world, and in the inferences of his reason. CHAP. For to deceive his creatures would be an imperfection in God; but God is perfect. Whatever therefore is clearly and distinctly apprehended by our reason, must be true. We have only to be on our guard against our own precipitancy and prejudice, or surrender of our reason to the authority of others. It is not by our understanding, such as God gave it to us, that we are deceived; but the exercise of our free-will, a high prerogative of our nature, is often so incautious as to make us not discern truth from falsehood, and affirm or deny, by a voluntary act, that which we do not distinctly apprehend. The properties of quantity, founded on our ideas of extension and number, are distinctly perceived by our minds, and hence the sciences of arithmetic and geometry are certainly true. But when he turns his thoughts to the phenomena of external sensation, Descartes cannot wholly extricate himself from his original concession, the basis of his doubt, that the senses do sometimes deceive us. He endeavours to recon cile this with his own theory, which had built the certainty of all that we clearly hold certain on the perfect veracity of God. and second 92. It is in this inquiry that he reaches that Primary important distinction between the primary and ary quali be so, it is on account of those attributes of his essence which we have no knowledge of." I have made this extract from a very short tract, called Contemplatio Philosophica, by Brook Tayfor, which I found in an unpublished memoir of his life printed by the late Sir William Young in 1793. It bespeaks the clear and ties. III. CHAP. Secondary properties of matter, the latter being modifications of the former, relative only to our apprehension, but not inherent in things, which, without being wholly new, contradicted the Aristotelian theories of the schools*; and he remarked that we are never, strictly speaking, deceived by our senses, but by the inferences which we draw from them. 93. Such is nearly the substance, exclusive of a great variety of more or less episodical theories, of the three metaphysical works of Descartes, the history of the soul's progress from opinion to doubt, and from doubt to certainty. Few would dispute, at the present day, that he has destroyed too much of his foundations to render his superstructure stable; and to readers averse from metaphysical reflection, he must seem little else than an idle theorist, weaving cobwebs for pastime which common sense sweeps away. It is fair however to observe, that no one was more careful than Descartes to guard against any practical scepticism in *See Stewart's First Dissertation on the Progress of Philosophy. This writer has justly observed, that many persons conceive colour to be inherent in the object, so that the censure of Reid on Descartes and his followers, as having pretended to discover what no one doubted, is at least unreasonable in this respect. A late writer has gone so far as to say: "Nothing at first can seem a more rational, obvious, and incontrovertible conclusion, than that the colour of a body is an inherent quality, like its weight, hardness, &c.; and that to see the object, and to see it of its own colour, when nothing intervenes between our eyes and it, are one and the same thing. Yet this is only a prejudice," &c. Herschel's Discourse on Nat. Philos. p. 82. I almost even suspect that the notion of sounds and smells being secondary or merely sensible qualities, is not distinct in all men's minds. But after we are become familiar with correct ideas, it is not easy to revive prejudices in our imagination. In the same page of Stewart's Dissertation, he has been led, by dislike of the university of Oxford, to misconceive, in an extraordinary manner, a passage of Addison in the Guardian, which is evidently a sportive ridicule of the Cartesian theory, and is absolutely inapplicable to the Aristotelian. III. the affairs of life. He even goes so far as to maintain, CHAP. that a man having adopted any practical opinion on such grounds as seem probable should pursue it with as much steadiness as if it were founded on demonstration; observing, however, as a general rule, to choose the most moderate opinions among those which he should find current in his own country.* made to his 94. The objections adduced tations are in a series of seven. theologian named Caterus, the senne, the third by Hobbes, the fourth by Arnauld, the fifth by Gassendi, the sixth by some anonymous writers, the seventh by a Jesuit of the name of Bourdin. To all of these Descartes replied with spirit and acuteness. By far the most important controversy was with Gassendi, whose objections were stated more briefly, and I think with less. skill, by Hobbes. It was the first trumpet in the new philosophy of an ancient war between the sensual and ideal schools of psychology. Descartes had revived, and placed in a clearer light, the doctrine of mind, as not absolutely dependent upon the senses, nor of the same nature as their objects. Stewart does not acknowledge him as the first teacher of the soul's immateriality. "That many of the schoolmen, and that the wisest of the ancient philosophers, when they described the mind as a spirit, or as a spark of celestial fire, employed these expressions, not with any intention to materialize its essence, but merely from want of more unexcep against the Medi- Objections The first are by a Meditations. second by Mer III. tionable language, might be shown with demonstrative evidence, if this were the proper place for entering into the discussion."* But though it cannot be said that Descartes was absolutely the first who maintained the strict immateriality of the soul, it is manifest to any one who has read his correspondence, that the tenet, instead of being general, as we are apt to presume, was by no means in accordance with the common opinion of his age. The fathers, with the exception, perhaps the single one, of Augustin, had taught the corporeity of the thinking substance. Arnauld seems to consider the doctrine of Descartes as almost a novelty in modern times. "What you have written concerning the distinction between the soul and body appears to me very clear, very evident, and quite divine; and as nothing is older than truth, I have had singular pleasure to see that almost the same things have formerly been very perspicuously and agreeably handled by St. Augustin in all his tenth book on the Trinity, but chiefly in the tenth chapter."t But Arnauld himself, in his objections to the Meditations, had put it as at least questionable, whether that which thinks is not something extended, which, besides the usual properties of extended substances, such as mobility and figure, has also this particular virtue and power of thinking. The reply of Descartes removed the difficulties of the illustrious Jansenist, who became an ardent and almost complete disciple of the new philosophy. In a placard against the Cartesian III. philosophy printed in 1647, which seems to have CHAP. come from Revius, professor of theology at Leyden, it is said: "As far as regards the nature of things, nothing seems to hinder but that the soul may be either a substance, or a mode of corporeal substance."* And More, who had carried on a metaphysical correspondence with Descartes, whom he professed to admire, at least at that time, above all philosophers that had ever existed, without exception of his favourite Plato, extols him after his death in a letter to Clerselier, as having best established the foundations of religion. "For the peripatetics," he says, "pretend that there are certain substantial forms emanating from matter, and so united to it that they cannot subsist without it, to which class these philosophers refer the souls of almost all living beings, even those to which they allow sensation and thought; while the Epicureans, on the other hand, who laugh at substantial forms, ascribe thought to matter itself, so that it is M. Descartes alone of all philosophers, who has at once banished from philosophy all these substantial forms or souls derived from matter, and absolutely divested matter itself of the faculty of feeling and thinking."+ * Vol. x. p. 73. + Vol. x. p. 386. Even More seems to have been perplexed at one time by the difficulty of accounting for the knowledge and sentiment of disembodied souls, and almost inclined to admit their corporeity. "J'aimerois mieux dire avec les Platoniciens, les anciens pères, et presque tous les philosophes, que les ames humaines, tous les génies tant bons que mau vais, sont corporels, et que par con- |