The longer I live, the more I am inclined to the belief that this earth is used by other planets as a lunatic asylum.

I have to say to myself that some birds aren't very close. Their feathers are just too bright. When they fly away, you know it's a sin to lock them up, and you'll be inspired by them. Still, the place you live in is that much more drab and empty that they're gone. I think I really miss my friends.

数学的进步是通过不断质疑已建立的真理来实现的。