The Sophists and the Sceptics, Plato and Aristotle, the Stoics and the Epicureans took up the question, and from the time of Locke and Kant it has been prominent in modern philosophy.
He set up an " intelligence bureau " in Rome, instituted mysteries like those of Eleusis, from which his particular enemies the Christians and Epicureans were alike excluded as " profane," and celebrated a mystic marriage between himself and the moon.
Cosmological materialism is that form of the doctrine in which the dominant motive is the formation of a comprehensive world-scheme: the Stoics and Epicureans were cosmological materialists.
- The Epicureans differed from the Stoics by adopting a purely mechanical view of the worldprocess.
The Epicureans, on the other hand, were empirical pessimists.