诗歌的美在于其模糊性。

It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.

"The only true wisdom is in knowing you know nothing."

所有老年人共享的大秘密是，你在七八十年里真的没有改变。你的身体改变了，但你一点也没变。当然，这会引起很大的困惑。

Learning is not just about finding patterns, but about understanding the underlying mechanisms that generate those patterns.

世界所有前进的动力都归功于不安分的人。快乐的人不可避免地把自己限制在古老的界限内。