_Platonic Philosophy Develops the Ideal_.--Plato was the pupil of Socrates and the teacher of Aristotle. These three represent the culmination of Greek philosophy. In its fundamental principles the Platonic philosophy represents the highest flight of the mind in its conception of being and of the nature of mind and matter, entertained by the philosophers. The doctrine of Plato consisted of three primary principles: matter, ideas, and God. While matter is co-eternal with God, he created all animate and inanimate things from matter. Plato maintained that there was a unity in design. And as God was an independent and individual creator of the world, who fashioned the universe, and is father to all creatures, there was unity in God. Plato advanced the doctrine of reminiscences, {223} in which he accounted for what had otherwise been termed innate ideas. Plato also taught, to a certain extent, the transmigration of souls. He was evidently influenced in many ways by the Indian philosophy; but the special doctrine of Plato made ideas the most permanent of all things. Visible things are only fleeting shadows, which soon pass away; only ideas remain. The universal concept, or notion, is the only real thing. Thus the perfect globe is the concept held in the mind; the marble, ball, or sphere of material is only an imperfect representation of the same. The horse is a type to which all individual horses tend to conform; they pass away, but the type remains. His work was purely deductive. His major premise was accepted on faith rather than determined by his reason. Yet in philosophical speculations the immortality of the soul, future rewards and punishments, the unity of the creation and the unity of the creator, and an all-wise ruler of the universe, were among the most important points of doctrine. _Aristotle the Master Mind of the Greeks_.--While Aristotle and Plato sought to prove the same things, and agreed with each other on many principles of philosophy, the method employed by the former was exactly the reverse of that of the latter. Plato founded his doctrine on the unity of all being, and observed the particular only through the universal. For proof he relied on the intuitive and the synthetic. Aristotle, on the contrary, found it necessary to consider the particular in order that the universal might be established. He therefore gathered facts, analyzed material, and discoursed upon the results. He was patient and persistent in his investigations, and not only gave the world a great lesson by his example, but he obtained better results than any other philosopher of antiquity. It is generally conceded that he showed the greatest strength of intellect, the deepest insight, the greatest breadth of speculative thought, and the clearest judgment of all philosophers, either ancient or modern.