But then a new leader arose, Chrysippus, a man who may have been greater than Zeno. He was inspirational but at the same time thoroughly analytical. At first Chrysippus was unhappy with the direction of the Stoic school based on doctrinal arguments with the school’s leader Cleanthes, but when the latter died in 230 B.C, Chrysippus became the leader. He helped create structure for Zeno’s beliefs and defended them without reservation. When Chrysippus died in 206 B.C. another leaderless period began.
By the middle 2nd century, the school was led by Antipater, who pushed for recognition of the relationship between Stoicism and Platonism. The common ground identified with the Academy would influence Stoic thinking for all of the future.