Born in an era when the best was behind him, he read a bit of everything and wrote a bit on everything; all that remains now are isolated fragments. He trained as a Stoic. As a citizen, he participated in his local government, and appreciated the stabilizing effects of the empire. He traveled everywhere, saw much of Europe and even North Africa. Like many of his school, he believed that philosophy was a tripartite discipline providing world-orientation, puzzle-solving, and advice. Alone among the Stoics, he believed that emotions were not intellectual, and therefore that right-thinking, without personal strength and practice in self-restraint, was insufficient for right-living; in this he followed Plato instead of his mentors. He calculated the size and distance of the moon, and from the shores of Cadiz, observed the tides and speculated that the moon was the cause of them. The lunar crater at 31.8°N 29.9°E is named for him; otherwise, he is now forgotten.