Aristotle was one of the greatest thinkers of all time. He even wrote works--Politics, Poetics and Metaphysics--that are still taught today. He wrote on a wide variety of sciences, including cosmology, physics, biology and chemistry. He developed the concept of empirical reality, in which theories are tested based on the evidence of our senses. He also collected information on thousands of species of plants and animals. But he wasn't perfect, and he was a product of a very different time and culture. Some of the things he believed formed the foundations for studies and disciplines thousands of years in the...