身形最好的状态是顺其自然，感情最好的状态是真率。顺其自然就不会背离，真率就不用劳神。
理解复利的力量以及获取复利的难度，是理解许多事情的核心所在。
God could not be everywhere, and therefore he made mothers.
A mathematician's work is never done; there are always new questions to explore and new mysteries to uncover.
The most important thing in life is to be happy.
Circumstances rule men; men do not rule circumstances.