His method was the slow and very patient observation of individual facts. He is the complement of Plato, who tended to neglect the fact for the "idea" or general law or type behind it and logically prior to it. Deductive reasoning was Plato's method--that of the poet or great artist, who worships not what he sees but the unseen perfect form behind; inductive reasoning was Aristotle's method--that of the ordinary man, who respects what he sees that he may by patience find out what is the unseen class to which it belongs. This latter has been the foundation-stone of all modern science; in the main the resemblance between Aristotle's system of procedure and that of the greatest liberators of the human mind, Bacon and Descartes, are more valuable than the differences. It would be difficult to mention any really great subject on which Aristotle has not left some work which is not to be lightly disregarded. His works are in the form of disjointed notes, taken down at his lectures by his disciples. As a rule they are dry and precise, though here and there rays of glory appear which prove that the master was capable of poetic expression even in prose. A rather fine hymn has been ascribed to him. As we might expect, he is weakest in scientific research, mainly because he could not command the use of instruments familiar to us. That a human being who possessed no microscope should have left such a detailed account of the most minute marks on the bodies of fish and animals is an absolute marvel; so perfect is his description that it cannot be bettered to-day. Cuvier and Linnaeus are great names in Botany; Darwin said that they were mere schoolboys compared with Aristotle--in other words, botanical research had progressed thewrong way. Many works have appeared on Ethics and Philosophy; few of them are likely to survive as long as Aristotle's _Ethics_ and _Metaphysics_ Sometimes our modern philosophers seem to forget their obligation to resemble human beings in their writings. We hear so much of mist and transcendentalism, problems, theories, essays, critiques that a book of Aristotle's dry but exact definition seems like the words of soberness after some nightmare. The man is not assaulting the air; his feet are on firm ground. This is how he proceeds. "Virtue is a mean between excess and defect." In fact, his object appears to have been to teach something, not to mystify everybody and to cover the honourable name of philosophy with ridicule.