How Descartes Broke With Classical Thinking

Classical thinking had assigned different natures to different things—minerals had one nature, stars another, plants another. But Descartes discarded these distinctions and looked upon all things as being equal in nature. The mystical distinction among the natures of things thus disappeared. For example, respiration in the human body and the circulation of blood were no longer inexplicable, or virtually magic phenomena; both could now be treated in terms of extension and motion. The circula...

 Stress is Healthy

Your heart might be pounding, you might be breathing faster, maybe breaking out into a sweat. And normally, we interpret these physical changes as anxiety or signs that we aren't coping very well with the pressure. But what if you viewed them instead as signs that your body was energized, was preparing you to meet this challenge? Now that is exactly what participants were told in a study conducted at Harvard University. Before they went through the social stress test, they were taught to ret...