Of Law, Of Greek Education. Of Vision. Of the Whole World. Of Signs. Pythagorean Questions. Universals. Of Varieties of Style. Homeric Problems, in five books. Of the Reading of Poetry. There are also by him : A Handbook of Rhetoric. Solutions. Two books of Refutations. Recollections of Crates. Ethics. This is a list of his writings. But at last he left Crates, and the men above mentioned were his masters for twenty years. Hence he is reported to have said, " I made a prosperous voyage when I suffered shipwreck." But others attribute this saying of his to the time when he was under Crates. A different version of the story is that he was staying at Athens when he heard his ship was wrecked and said, " It is well done of thee, Fortune, thus to drive me to philosophy." But some say that he disposed of his cargo in Athens, before he turned his attention to philosophy. He used then to discourse, pacing up and down in the painted colonnade, which is also called the colonnade or Portico a of Pisianax, but which received its name