"We Greeks believe that a man who takes no part in public affairs is not merely lazy, but good for nothing" ― Thucydides From Thucydides Historian Added on 1/31/2026 About Thucydides Thucydides was an ancient Greek historian and Athenian general best known for History of the Peloponnesian War. His approach to evidence and causation made his work foundational for later political and historical analysis. View all quotes from Thucydides