Galen maintains that most philosophers including Pythagoras, Aristotle and even many Stoics agreed with Plato's division of the soul, even if some of them understood the division in terms of powers rather than as parts. His goal is to show that Chrysippus represents a deviant position. He claims that Zeno and Cleanthes were really on Plato's side, but the evidence he presents is very meagre. He accepts he has little evidence for Zeno, and the only evidence he provides for Cleanthes is a brief versified dialogue between anger and reason which he thinks shows that Cleanthes accepted an irrational part of the soul.
