Diogenes of Sinope was a controversial ancient Greek philosopher and one of the founders of Cynic philosophy. He promoted a simple, self-sufficient life in accordance with nature, rejecting all conventional desires for wealth, power, and fame. Diogenes was notorious for his unconventional public behavior, such as living in a large ceramic jar in the marketplace and carrying a lamp during the day, claiming to be looking for an honest man. His radical asceticism and critique of social conventions have left a lasting impact on Western philosophical thought, influencing Stoicism and other schools of thought.