Just in the same way and at the same time Zeno’s great rival Epicurus fixed the seat of his school in the Garden at Athens, which thenceforth became for thirty-six years the central point of the teacher’s activity. About him gathered a circle of friends whom similarity of principles and the enjoyment of cultivated intercourse bound together with unusual intimacy. It speaks for the special character of his philosophy that from the beginning women and even hetæræ formed a part of this society. But he succeeded during this long period of teaching in impressing upon his school so strong a character that it is recognised without essential change during hundreds of years.(403) We should do injustice to the character and the work of Plato, Aristotle, Zeno, and Epicurus, the founders of the four great schools of Greek philosophy, if we did not take into account what was in their day no doubt of greater influence than their writings, that is, their function as teachers, their oral teaching itself, and those fundamental principles of philosophic education which lay at the bottom of it. Plato has left us very little of doctrine put out in his own name. He is not a speaker in his dialogues. He puts what he would say in the mouth of others, especially of Socrates. He tells us that he has purposely done this in order that men might not say, here is Plato’s philosophy:(404) and the reason of this was that he utterly distrusted his own or any man’s power to disclose to others such a system in a set form of words. It is, then, the more remarkable that he has said in his own person what were his most settled convictions as to intercourse by word of mouth, and continuous written discourse, viewed as instruments for attaining and communicating truth. He expresses his absolute disbelief that men can reach true conceptions by their being set forth in the immutable form of writing. It is a far other and more difficult work which has to be accomplished. In a word, not even aptness for learning and memory will give the power to see the truth as to virtue and vice to one who is not kin to the subject; nor, again, this kinship without such aptitude and memory: but when both are joined, then out of living together, after much time,(405) by the continual friction of name, definition, acts of sight and perception, by thought and meditation, the hearing and answering the objections of others, the process of mutual cross-examination discharged without envy or jealousy, and with sincere love of the truth, a sudden flash of fire kindles in the mind, and nourishes itself, disclosing the knowledge required. Thus it is that prudence and intelligence on each subject, shining out in this beam of light, go forward as far as man may reach. The view here propounded, if reflected upon, will convey to us what the living work first of Pythagoras, and then of Plato, Aristotle, Zeno, Epicurus, and their successors, was. Both the conception indeed and the realisation