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36 into the Original of our Ideas of Beauty and Virtue, by Francis Hutcheson, afterwards the celebrated Professor of Moral Philosophy in Glasgow. In this tract simple and compound ratios are applied, in forms of mathematical reasoning, to solve problems of moral philosophy. It illustrates in some degree the bent of Reid’s thoughts at this time, and his inherited interest in mathematical reasonings. But it also shows bent of thought in another direction, and recognition of other scientific methods than mathematical demonstration, which had been favoured as of universal application by philosophers like Descartes and Spinoza. Reid argued, in the spirit of his master Turnbull, that genuine ethical inquiry is concerned with a class of facts which are under a higher category, and refuse to submit to geometrical measurement.

It is a curious circumstance in the evolution of philosophy in Scotland that Reid’s first publication should thus be adverse criticism of Hutcheson, the father of Modern Philosophy in Scotland. It is also curious that this juvenile performance presents another of the parallels between Reid and Kant. For it happened that in the preceding year Kant had made his first appearance, on a question concerned with mathematics, and, like Reid’s, in an argument against conclusions maintained by Leibnitz.

But this mathematical brochure imperfectly represents the 'intense study' at New Machar. For an event happened soon after Reid’s settlement there which determined the direction of his thoughts for the remainder of his life. In January 1739, a book made an almost unnoticed appearance in London, which in the end became the chief factor in shaping the course of European thought. Its author was David Hume, then a young man, unknown to fame, not