This document provides an overview of several ancient Greek philosophers including Pythagoras, Heraclitus, Democritus, Diogenes of Sinope, Epicurus, Socrates, Plato, Aristotle, and Archimedes. It discusses their dates, backgrounds, and some of their key philosophical beliefs and contributions to areas like mathematics, science, and ethics. The document concludes by posing discussion questions about how these ancient philosophers distinguished themselves, who made the greatest contributions, how their philosophies still influence life today, and what new inventions might help others.