"Even a soul submerged in sleep is hard at work and helps make something of the world." ― Heraclitus From Heraclitus Philosopher Added on 1/31/2026 About Heraclitus Heraclitus was an ancient Greek philosopher from Ephesus known for doctrines of change, conflict, and the logos. His surviving fragments deeply influenced later Greek, Roman, and modern philosophy. View all quotes from Heraclitus