Diogenes of Sinope or Diogenes the Cynic (c. 412-323 BCE) was a contemporary of Socrates' pupil Plato, whom Plato described as ‘a Socrates gone mad'. Like Socrates and, to a lesser extent, Plato, ...
Diogenes the Cynic (c. 412–323 BCE) was a contemporary of Plato, who once called him "a Socrates gone mad." After being exiled from his native Sinope for having defaced its coinage, Diogenes moved to ...