05:24
Triangles: Pythagorean Theorem, The
This clip introduces the Pythagorean Theorem, named for the Greek mathematician Pythagoras. In addition to explaining the theorem itself, the clip explains how it is commonly used, including as a way to determine if a triangle is a right triangle, a...
49:52
Classical Greek philosophy
What is "the good," and why is it that one can never step into the same river twice? This program featuring Princeton University's Alexander Nehamas and Richard Sorabji, honorary fellow at Wolfson College, the University of Oxford, addresses core to...