Who are the philosophers socrates Plato and Aristotle?

Socrates: Ancient Greek, changed philosophy from a study of natural science to ethics and politics. Wrote nothing.

PLATO: Ancient Greek, student of Socrates, most influential philosopher of all time. Works: The Republic.

ARISTOTLE: Ancient Greek, student of Plato, second most influential philosopher of all time. Works: The Nichomachean Ethics, The Metaphysics, The Politics.