Which of these philosophers never wrote down his ideas?
Socrates is perhaps the best-known philosopher in world history. Socrates trained Plato, who in turn trained Aristotle; but while his students wrote famous philosophy books, Socrates stuck to an oral tradition. If he had any written works at all, they have not survived.
Plato
Aristotle
Socrates
Seneca
Answer: The correct answer is Socrates