"Diogenes (/daɪˈɒdʒɪniːz/ dy-OJ-in-eez; Ancient Greek: Διογένης, romanized: Diogénēs [di.oɡénɛ͜ɛs]), also known as Diogenes the Cynic (Διογένης ὁ Κυνικός, Diogénēs ho Kynikós), was a Greek philosopher and one of the founders of Cynic philosophy. He was born in Sinope, an Ionian colony on the Black Sea, in 412 or 404 BC and died at Corinth in 323 BC.
Diogenes was a controversial figure. His father minted coins for a living, and Diogenes was banished from Sinope when he took to debasement of currency. After being exiled, he moved to Athens and criticized many cultural conventions of the city. He modelled himself on the example of Heracles, and believed that virtue was better revealed in action than in theory. He used his simple lifestyle and behaviour to criticize the social values and institutions of what he saw as a corrupt, confused society. He had a reputation for sleeping and eating wherever he chose in a highly non-traditional fashion, and took to toughening himself against nature. He declared himself a cosmopolitan and a citizen of the world rather than claiming allegiance to just one place. There are many tales about his dogging Antisthenes´ footsteps and becoming his "faithful hound"." - (en.wikipedia.org 09.11.2019)
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