"In The Two Greatest Ideas, Linda Zagzebski tells the history of two hugely impactful ideas and their crucial role in shaping human culture over the last two thousand years. These ideas, Zagzebski argues, underlie virtually all of the intellectual innovations of human civilization, yet are so simple they are almost invisible. The first idea is that the human mind is capable of grasping the universe. The second is that the human mind is capable of...