Discourses and Selected Writings – Quote 7

Stoicism was founded in the third century BC by Zeno of Citium; Cleanthes succeeded him as head of the school. But it was Cleanthes’ successor, Chrysippus (d. 208 BC), who contributed most to the development of Stoic doctrine and deserves most of the credit for what Stoicism eventually became – the dominant philosophy of the post-classical era.