Power of self confidence

My friend Kevin is one of the smartest people I know, hands down. Nobody even comes close. I went to a pretty good, highly ranked university in California. In my close circle of friends, Kevin outshone everybody else. It's as if he can figure out complicated math equations at the back of his head. In fact, one time, we were talking about the Heisenberg Uncertainty Principle while eating pizza. There I was, completely stumped about this theory, and my friend Kevin broke it down in between bites of a slice of pizza. That's how brilliant he was and still is.