Diogenes of Sinope, d. c.320 BC, was a Greek philosopher, perhaps the most noted of the Cynics. He pursued the Cynic ideal of self-sufficiency, a life that was natural and not dependent upon the nonessential luxuries of civilization. A student of Antisthenes, he is credited with the development of the chreia (moral epigram), with a scandalous attack of convention entitled Republic (which influenced Zeno of Citium), and with tragedies illustrative of the human predicament. click here to read more about Diogenes at https://www.iep.utm.edu/diogsino/
Because Diogenes believed that virtue was better revealed in action than in theory, he made his life a protest against what he thought of as a corrupt society. He is said to have lived in a large tub, rather than house, and to have gone about Athens with a lantern in the daytime, claiming to be looking for an honest man–but never finding one. In later art, Diogenes is often depicted in a torn cloak, with a dog, carrying a lantern.