Critical Miscellanies, Vol. II | Page 8

caviller at authority, nor born rebel against established teachers and governors. His understanding seriously craved a full and independent satisfaction, and could draw this only from laborious meditation, which should either disclose the inadequacy of the grounds for an opinion, or else establish it, with what would be to him a new and higher because an independently acquired, conclusiveness.
His letter to Buffon, to which we have already referred, is an illustration of this wise, and never captious nor ungracious, caution in receiving ideas. Neither Buffon's reputation, nor the glow of his style, nor the dazzling ingenuity and grandeur of his conceptions--all of them so well calculated, at one-and-twenty, to throw even a vigilant intelligence off its guard--could divert Turgot from the prime scientific duty of confronting a theory with facts. Buffon was for explaining the formation of the earth and the other planets, and their lateral movement, by the hypothesis that a comet had fallen obliquely on to the sun, driven off certain portions of its constituent matter in a state of fusion, and that these masses, made spherical by the mutual attraction of their parts, were carried to different distances in proportion to their mass and the force originally impressed on them. Buffon may have been actuated, both here and in his other famous hypothesis of reproduction, by a desire, less to propound a true and durable explanation, than to arrest by a bold and comprehensive generalisation that attention, which is only imperfectly touched by mere collections of particular facts. The enormous impulse which even the most unscientific of the speculations of Descartes had given to European thought, was a standing temptation to philosophers, not to discard nor relax patient observation, but to bind together the results which they arrived at by this process, by means of some hardy hypothesis. It might be true or not, but it was at any rate sure to strike the imagination, which ever craves wholes; and to stimulate discussion and further discovery, by sending assailants and defenders alike in search of new facts, to confirm or overthrow the position.[20]
[Footnote 20: See Condorcet's éloge on Buffon (OEuv. iii. 335); and a passage from Bourdon, quoted in Whewell's Hist. Induct. Sci. iii. 348.]
Turgot was less sensible of these possible advantages, than he was alive to the certain dangers of such a method. He perceived that to hold a theory otherwise than as an inference from facts, is to have a strong motive for looking at the facts in a predetermined light, or for ignoring them; an involuntary predisposition most fatal to the discovery of truth, which is nothing more than the conformity of our conception of facts to their adequately observed order. Why, he asks, do you replunge us into the night of hypotheses, justifying the Cartesians and their three elements and their vortices? And whence comes your comet? Was it within the sphere of the sun's attraction? If not, how could it fall from the sphere of the other bodies, and fall on the sun, which was not acting on it? If it was, it must have fallen perpendicularly, not obliquely; and, therefore, if it imparted a lateral movement, this direction must have been impressed on it. And, if so, why should not God have impressed this movement upon the planets directly, as easily as upon the comet to communicate it to them? Finally, how could the planets have left the body of the sun without falling back into it again? What curve did they describe in leaving it, so as never to return? Can you suppose that gravitation could cause the same body to describe a spiral and an ellipse? In the same exact spirit, Turgot brings known facts to bear on Buffon's theory of the arrangement of the terrestrial and marine divisions of the earth's surface. The whole criticism he sent to Buffon anonymously, to assure him that the writer had no other motive than the interest he took in the discovery of truth and the perfection of a great work.[21]
[Footnote 21: October, 1748. OEuv. ii. 782-784.]
Turgot's is probably the only case where the biographer has, in emerging from the days of school and college, at once to proceed to expound and criticise the intellectual productions of his hero, and straightway to present fruit and flower of a time that usually does no more than prepare the unseen roots. There is, perhaps, a wider and more stimulating attraction of a dramatic kind in the study of characters which present a history of active and continuous growth; which, while absolutely free from flimsy caprice and disordered eccentricity, are ever surprising our attention by an unsuspected word of calm judgment or fertile energy, a fresh interest or an added sympathy, by the disappearance of some crudity or the assimilation of some new and richer