Diogenes ( dy-OJ-in-eez; Ancient Greek: Διογένης, romanized: Diogénēs [di.oɡénɛːs]), also known as Diogenes the Cynic (Διογένης ὁ Κυνικός, Diogénēs ho Kynikós) or Diogenes of Sinope, was a Greek philosopher and one of the founders of Cynicism. He was born in Sinope, an Ionian colony on the Black Sea coast of Anatolia, in 412 or 404 BC and died at Corinth in 323 BC. Diogenes was a controversial figure. He was banished, or he fled, from Sinope over debasement of currency.
https://en.wikipedia.org/wiki/Diogenes