The Epicureans despised the investigations of philosophy, since, in their view, they did not contribute to happiness. The subject of their inquiries was happiness, not truth. What will promote this, was the subject of their speculation. Epicurus, born B.C. 342, contended that pleasure was happiness; that pleasure should not be sought for its own sake, but with a view of the happiness of life obtained by it. He taught that it was inseparable from virtue, and that its enjoyments should be limited. He was averse to costly pleasures, and regarded contentedness with a little to be a great good. He placed wealth not in great possessions, but few wants. He sought to widen the domain of pleasure, and narrow that of pain, and regarded a passionless state of life the highest. Nor did he dread death, which was deliverance from misery. Epicurus has been much misunderstood, and his doctrines were subsequently perverted, especially when the arts of life were brought into the service of luxury, and a gross materialism was the great feature of society. Epicurus had much of the practical spirit of a philosopher, although very little of the earnest cravings of a religious man. He himself led a virtuous life, because it was wiser and better to be virtuous, not because it was his duty. His writings were very voluminous, and in his tranquil garden he led a peaceful life of study and enjoyment. His followers, and they were numerous, were led into luxury and effeminacy, as was to be expected from a skeptical and irreligious philosophy, the great principle of which was that whatever is pleasant should be the object of existence. [Footnote: the doctrines of the Epicureans are best set forth in Lucretius.] The Stoics were a large and celebrated sect of philosophers; but they added nothing to the domain of thought,--they created no system, they invented no new method, they were led into no new psychological inquiries. Their inquiries were chiefly ethical. And if ethics are a part of the great system of Grecian philosophy, they are well worthy of attention. Some of the greatest men of antiquity are numbered among them--like Seneca and Marcus Aurelius. The philosophy they taught was morality, and this was eminently practical and also elevated. [Sidenote: Zeno.]