Charlie Munger at the 2004 Berkshire Hathaway Annual Meeting:

I don’t know anybody who is wise who doesn’t read a lot. On the other hand, that alone won’t do it. You have to have a temperament, really, which grabs the correct ideas and does something with those ideas. And I think most people who read a lot don’t have the necessary temperament, and they grab the ideas or they’re simply confused by the mass of material. And, of course, that won’t work.