The more things a man is ashamed of, the more respectable he is.
一个人感到羞耻的事越多,他就越值得尊敬。
世界上充满了显而易见的事情,却没人注意到。
Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.
在科学管理中,最重要的元素是任务观念。