Some of the smartest people I ever met were high school dropouts. I've known many people without degrees who are quite knowledgeable, who keep up with international news, who are interested in history and science, and who are fascinating conversationalists because they are original thinkers, who are artists and musicians. I know more than a few college grads who plodded their way through their classes but seem not to have a thought in their heads. They aren't creative, they aren't deep thinkers, and they don't read for pleasure. If you haven't noticed this you either don't get out much or don't keep your eyes open.