The Epicurean school arose at Athens, almost contemporaneously with the Porch, though perhaps a little earlier than this. Epicurus, its founder, was born 342 B.C., six years after the death of Plato. Of his youth and education little is known. In his thirty-sixth year he opened a philosophical school at Athens, over which he presided till his death, 271 B.C. His disciples and adherents formed a social league, in which they were united by the closest band of friendship, illustrating the general condition of things in Greece after the time of Alexander, when the social took the place of the decaying poetical life. Epicurus himself compared his society to the Pythagorean fraternity, although the community of goods, which forms an element in the latter, Epicurus excludes, affirming that true friends can confide in one another. The moral conduct of Epicurus has been repeatedly assailed but, according to the testimony of the most reliable witnesses, his life was blameless in every respect, and his personal character was estimable and amiable. Moreover, it cannot be doubted that much of that, which is told by some, of the offensive voluptuousness of the Epicurean band, should be regarded as calumny. Epicurus was a voluminous writer, surpassing, in this respect, even Aristotle, and exceeded by Chrysippus alone. To the loss of his greater works he has himself contributed, by his practice of composing summaries of his system, which he recommended his disciples to commit to memory. These summaries have been for the most part preserved. The end which Epicurus proposed to himself in science is distinctly revealed in his definition of philosophy. He calls it an activity which, by means of conceptions and arguments, procures the happiness of life. Its end is, therefore, with him essentially a practical one, and on this account the object of his whole system is to produce a scheme of morals which should teach us how we might inevitably attain a happy life. It is true that the Epicureans adopted the usual division of philosophy into logic, which they called canonics, physics, and ethics; but they confined logic to the doctrine of the criterion of truth, and considered it only as an instrument and introduction to physics, while they only treated of physics as existing wholly for ethics, and being necessary in order to free men from superstitious fear, and deliver them from the power of fables and mythical fancies concerning nature, which might hinder the attainment of happiness. We have therefore in Epicureanism the three old parts of philosophy, but in a reversed order, since logic and physics here stand as the handmaids of ethics. We shall confine ourselves in our exposition to the latter, since the Epicurean canonics and physics offer little scientific interest, and since the physics especially is not only very incomplete and without any internal connection, but rests entirely upon the atomic theory of Democritus.