Diogenes，born Sinope， Paphlygonia
died c. 320 BC， probably at Corinth， Greece
archetype of the Cynics， a Greek philosophical sect that stressed stoic self-sufficiency and the rejection of luxury. He is credited by some with originating the Cynic way of life， but he himself acknowledges an indebtedness to Antisthenes， by whose numerous writings he was probably influenced. It was by personal example rather than any coherent system of thought that Diogenes conveyed the Cynic philosophy. His followers positioned themselves as watchdogs of morality.
Diogenes is the subject of numerous apocryphal stories， one of which depicts his behaviour upon being sold into slavery. He declared that his trade was that of governing men and was appointed tutor to his master's sons. Tradition ascribes to him the famous search for an honest man conducted in broad daylight with a lighted lantern. Almost certainly forced into exile from Sinope with his father， he had probably already adopted his life of asceticism （Greek askesis， “training”） when he reached Athens. Referred to by Aristotle as a familiar figure there， Diogenes began practicing extreme anti-conventionalism. He made it his mission to “deface the currency，” perhaps meaning “to put false coin out of circulation.” That is， he sought to expose the falsity of most conventional standards and beliefs and to call men back to a simple， natural life.
For Diogenes the simple life meant not only disregard of luxury but also disregard of laws and customs of organized， and therefore “conventional，” communities. The family was viewed as an unnatural institution to be replaced by a natural state in which men and women would be promiscuous and children would be the common concern of all. Though Diogenes himself lived in poverty， slept in public buildings， and begged his food， he did not insist that all men should live in the same way but merely intended to show that happiness and independence were possible even under reduced circumstances.
The program for life advocated by Diogenes began with self-sufficiency， or the ability to possess within oneself all that one needs for happiness. A second principle， “shamelessness，” signified the necessary disregard for those conventions holding that actions harmless in themselves may not be performed in every situation. To these Diogenes added “outspokenness，” an uncompromising zeal for exposing vice and conceit and stirring men to reform. Finally， moral excellence is to be obtained by methodical training， or asceticism.
Among Diogenes' lost writings are dialogues， plays， and the Republic， which described an anarchist utopia in which men lived “natural” lives.