divides a whole into the natural parts, and reunites the scattered parts into a natural or organized whole; which defines the abstract essences or universal ideas of all things, and connects them; which pierces the veil of hypotheses and reaches the final cause or first principle of all; which regards the sciences in relation to the idea of good. This ideal science is the highest process of thought, and may be described as the soul conversing with herself or holding communion with eternal truth and beauty, and in another form is the everlasting question and answer—the ceaseless interrogative of Socrates. The dialogues of Plato are themselves examples of the nature and method of dialectic. Viewed objectively, the idea of good is a power or cause which makes the world without us correspond with the world within. Yet this world without us is still a world of ideas. With Plato the investigation of nature is another department of knowledge, and in this he seeks to attain only probable conclusions (cp. “Timæus,” 44 D).
If we ask whether this science of dialectic which Plato only half explains to us is more akin to logic or to metaphysics, the answer is that in his mind the two sciences are not as yet distinguished, any more than the subjective and objective aspects of the world and of man, which German philosophy has revealed to us. Nor has he determined whether his science of dialectic is at rest or in motion, concerned with the contemplation of absolute being, or with a process of development and evolution. Modern metaphysics may be described as the science of abstractions, or as the science of the evolution of thought; modern logic, when passing beyond the bounds of mere Aristotelian forms, may be defined as the science of method. The germ of both of them is contained in the Platonic dialectic; all metaphysicians have something in common with the ideas of Plato; all logicians have derived something from the method of Plato. The nearest approach in modern philosophy to the universal science of Plato, is to be found in the Hegelian “succession of moments in the unity of the idea.” Plato and Hegel alike seem to have conceived the world as the correlation of abstractions; and not impossibly they would have understood one another better than any of their commentators understand them (cp. Swift’s “Voyage to Laputa,” c. 8).[1] There is, however, a dif-
- ↑ “Having a desire to see those ancients who were most renowned for wit and learning, I set apart one day on purpose. I proposed that Homer and Aristotle might appear at
