The process of doing mathematics is more important than the result.

"The world is indeed full of peril, and in it there are many dark places; but still there is much that is fair, and though in all lands love is now mingled with grief, it grows perhaps the greater."

I don't think I'm a bad person. I just have a bad lifestyle.

Think wrongly, if you please, but in all cases think for yourself.

存在是一种风险，但不存在也是一种风险。

世界充满奥秘，而这正是它的美。