A wise man proportions his belief to the evidence.
没有事情的时候，需要照管这颗心，小心谨慎，好像有事一样；有了事情的时候，却要放下这颗心，泰然自得，好像没事一样。没有事情能像有事一样提防，才可以平息意想不到的变故；有了事情能像无事一样镇定，才能消除事件过程中的危机。
《与邵元冲的谈话》（1919年5月20日）
The search for happiness is one of the chief sources of unhappiness.
Symmetry is a complexity-reducing concept (co-routines include subroutines); seek it everywhere.
The problem with people who have no vices is that generally you can be pretty sure they’re going to have some pretty annoying virtues.