He who is running a race ought to endeavor and strive to the utmost of his ability to come off victor; but it is utterly wrong for him to trip up his competitor, or to push him aside. So in life it is not unfair for one to seek for himself what may accrue to his benefit; but it is not right to take it from another

Chrysippus

Chryssipus was the pupil of Cleanthes and the glue that held Stoicism together. He was considered one of the brightest minds of his time. Chryssipus is responsible for consolidating and elaborating the teachings of Zeno and Cleanthes into the Stoic system that would survive for over two thousand years. The historian Diogenes said, without Chryssipus, there would be no Stoicism.