Crates of Thebes

Crates (Ancient Greek: Κράτης ὁ Θηβαῖος; c. 365 – c. 285 BC) of Thebes was a Greek Cynic philosopher, the principal pupil of Diogenes of Sinope and the husband of Hipparchia of Maroneia who lived in the same manner as he. Crates gave away his money to live a life of poverty on the streets of Athens. Respected by the people of Athens, he is remembered for being the teacher of Zeno of Citium, the founder of Stoicism. Various fragments of Crates' teachings survive, including his description of the ideal Cynic state.

Source: Wikipedia — https://en.wikipedia.org/wiki/Crates_of_Thebes