The Ancient Greek philosopher Diogenes of Sinope was famous due to his behavior of holding a lantern in the face of Greek citizens and telling them he was looking for an honest man. Plato called him a "mad Socrates," and he was a follower of Cynicism.
Diogenes of Sinope believed a community had the responsibility of raising a child. He advocated for promiscuity among both men and women, and he felt self-sufficiency was more important than money and luxury. He based his beliefs on those of his teacher, Antisthenes. Diogenes of Sinope lived from approximately 412 B.C. to 323 B.C., and held the nickname "Kynos," which translated to "dog."