III. He wrote the following books. Two on the World; one on the Elements of Seed; one on Fortune; one on the Smallest Things; one on Atoms and Phantoms; one on the Senses; five Conversations about Heraclitus; one on Ethical Arrangement; one on Duty; one on Appetite; two on the Passions; one on Kingly Power; on the Lacedæmonian Constitution; three on Lycurgus and Socrates; one on Law; one on Divination; one volume of Dialogues on Love; one on the Eretrian Philosophers; one on Things Similar; one on Terms; one on Habits; three on Contradictions; one on Reason; one on Riches; one on Glory; one on Death; two on the Art of Dialectics; one on Categorems; one on Ambiguity; and a volume of Letters. LIFE OF CHRYSIPPUS. I. Chrysippus was the son of Apollonius, and a native of either Soli or Tarsus, as Alexander tells us in his Successions; and he was a pupil of Cleanthes. Previously he used to practise running as a public runner; then he became a pupil of Zeno or of Cleanthes, as Diocles and the generality of authors say, and while he was still living he abandoned him, and became a very eminent philosopher. II. He was a man of great natural ability, and of great acuteness in every way, so that in many points he dissented from Zeno, and also from Cleanthes, to whom he often used to say that he only wanted to be instructed in the dogmas of the school, and that he would discover the demonstrations for himself. But whenever he opposed him with any vehemence, he always repented, so that he used frequently to say:— In most respects I am a happy man, Excepting where Cleanthes is concerned; For in that matter I am far from fortunate. And he had such a high reputation as a dialectician, that most people thought that if there were such a science as dialectics among the Gods; it would be in no respect different from that of Chrysippus. But though he was so eminently able in matter, he was not perfect in style. III. He was industrious beyond all other men; as is plain from his writings; for he wrote more than seven hundred and five books. And he often wrote several books on the same subject, wishing to put down everything that occurred to him; and constantly correcting his previous assertions, and using a great abundance of testimonies. So that, as in one of his writings he had quoted very nearly the whole of the Medea of Euripides, and some one had his book in his hands; this latter, when he was asked what he had got there, made answer, “The Medea of Chrysippus.” And Apollodorus, the Athenian, in his Collection of Dogmas, wishing to assert that what Epicurus had written out of his own head, and without any quotations to support his arguments, was a great deal more than all the books of Chrysippus, speaks thus (I give his exact words), “For if any one were to take away from the books of Chrysippus all the passages which he quotes from other authors, his paper would be left empty.”