“... the person who is used to inquiry tries every possible pathway as he
conducts his search and turns in every direction, and, so far from giving up
the inquiry in the space of a day, does not cease his search throughout his
life: directing his attention to one thing after another that is relevant to
what is being investigated, he presses on until he attains his goal.”
Erasistratos of Ioulis, Paralysis book 2
(in Gale ̄n, Habits §1, CMG S.3 [1941] 12;trans. by G.E.R. Lloyd, Greek Science After Aristotle [1973] 86, altered)