It's amazing how the mind works.

I read "Surely You're Joking, Mr. Feynman!" a year ago and it was a really great book, I recommend it to everyone. I found it amazing how such a spirit could pursue a wide variety of interest (physics, music, drawings, lock-picking...).

I must also share these two essays by Feynman :

What Problems to Solve : http://genius.cat-v.org/richard-feynman/writtings/letters/problems

I love my wife. My wife is dead. : http://www.lettersofnote.com/2012/02/i-love-my-wife-my-wife-is-dead.html