The boundaries of our knowledge are the frontiers of our curiosity.
The more you give, the more you get back.
El silencio es el origen de todas las palabras.
我不喜欢害怕，我喜欢无所畏惧。
数学不是一项观赏性运动。
War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.