"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."

The only way to do great work is to love what you do.

What can be said at all can be said clearly; and whereof one cannot speak thereof one must be silent.

I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.

“如果真有一天，我们不能在一起了，就把我放在你心里吧!我会永远待在那里。”

今天种下的每一粒种子都是对未来粮食供应的投资。