Eratosthenes the astronomer who concluded that:. i. Earth is round Stoicism plane geometry solid geometry
ii. Epicureanism Happiness through moderate pleasure and freedom from fear and pain is the goal of life.
iii. A type of mathematics that relates points, lines, surfaces, and angles to one anothera type of mathematics that deals with spheres and cylinders
iv. Happiness comes from doing your duty and following reason, not emotion.