居安思危。思则有备，有备无患。
解释：处于安全环境时要考虑到可能出现的危险，考虑到危险就会有所准备，事先有了准备就可以避免祸患。
The method of psychology must be objective, even when studying subjective phenomena.
The stock market is a giant distraction to the business of investing.
The dead are not absent. They are just invisible.
生活的艺术不在于消除烦恼，而在于与烦恼共成长。