From Diognetus: to avoid idle enthusiasms; to disbelieve the professions of sorcerers and impostors about incantations and exorcism of spirits and the like; not to cock-fight or to be excited about such sports; to put up with plain-speaking and to become familiar with philosophy; to hear the lectures first of Baccheius, then of Tandasis and Marcian, in boyhood to write essays and to aspire to the camp-bed and skin coverlet and the other things which are part of the Greek training.