In a fascinating bit of intellectual history, Andrew Gelman says he started off in math but came to doubt he was good enough at pure math. This reminds me of something one of my Tsinghua students told me a few days ago. An art major at his high school (the top high school in Beijing) was accepted at UC Berkeley with a big scholarship on the condition that the art student compete for Berkeley in a college math competition.
i think professor gelman has cool comments on this blog. he is visiting ucb now