The more I live, the more I regret how little I know.
我活得越久，就越遗憾自己知道的太少。
The world is not a problem to be solved, but a mystery to be lived.
Nature has placed mankind under the governance of two sovereign masters， pain and pleasure.
数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。