This thesis has a threefold purpose. It is intended, firstly, to trace the development of the Epicurean and Stoic philosophies from their origins in Greece to their subsequent acceptance, with some modifications, in Rome; secondly, to ascertain the ways in which certain tenets of each philosophy agreed with the traditional character of the Roman people; and, thirdly, to determine the extent to vvhich the Julio-Claudian emperors were affected in their work and outlook by the Stoic and Epicurean doctrines of their day. To be effective, a philosophy must influence not only those who preach, but also those who hear; and this study has been undertaken in order to discover whether a philosophy like Stoicism; known to the world mainly, though not ...