Note 20 — Chapter III · HISTORY OF THE STOICS UNTIL THE END OF THE SECOND CENTURY B.C.
Oswald J. (Oswald Joseph) Reichel translation
B. Pupils of Zeno. (1) Cleanthes. The successor to the chair of Zeno was Cleanthes,20 a native of Assos in the Troad,21 a man of strong and firm character, of unusual endurance, energy, and contentment, but also slow of apprehension, and somewhat heavy in intellect. Resembling Xenocrates in mind, Cleanthes was in every way adapted to uphold his master’s teaching, and to recommend it by the moral weight of his own character, but he was incapable of expanding it more completely, or of establishing it on a wider basis.22