Diogenes of Sinope lived on the streets of Athens with no home, no property, and no interest in the social norms everyone else took for granted. He slept in a large ceramic jar, urinated on people who annoyed him, and told Alexander the Great to get out of his sunlight. He was either the most radical philosopher who ever lived or an ancient performance artist who turned poverty into protest.

This episode explores the life and ideas of the original Cynic — a man who rejected wealth, status, and convention to live like a dog and force his fellow citizens to question everything they valued.

• How Diogenes ended up homeless in Athens and embraced total material renunciation
• The famous encounter with Alexander the Great and the sunlight retort
• Cynic philosophy — why Diogenes believed civilization itself was the problem
• His lasting influence on Stoicism, Christianity, and modern countercultural thought