Bettany Hughes travels to India, Greece and China, profiling Buddha, Socrates and Confucius, the three greatest thinkers of antiquity.Bettany Hughes travels to India, Greece and China, profiling Buddha, Socrates and Confucius, the three greatest thinkers of antiquity.Bettany Hughes travels to India, Greece and China, profiling Buddha, Socrates and Confucius, the three greatest thinkers of antiquity.