The gateway to the mind, the self, who you are, what you believe in—the most complex structure in the universe, allegedly—is resting on your shoulders. I speak, of course, of the brain, that strange, wondrous organ that has given rise to many of our crown jewels as a species—science, philosophy, dreams. Thought in… » 3/09/12 10:00am 3/09/12 10:00am