困辱非忧，取困辱为忧；荣利非乐，忘荣利为乐。
困苦受辱不值得忧虑，而自取困辱才值得忧虑。荣耀利益不是真正的快乐，忘掉荣耀利益才是真正的快乐。
The longer I live the more I see that I am never wrong about anything, and that all the pains I have so humbly taken to verify my notions have only wasted my time.
We shall not cease from exploration, and the end of all our exploring will be to arrive where we started and know the place for the first time.
In mathematics, the art of proposing a question must be held of higher value than solving it.
保持简单，简单的事情重复做。
To write is to give voice to the voiceless.
