不和屯积钱财的人争较财富多少;不和热心仕途的人争较地位高下;不和骄傲自夸的人争较名声大小;不和年轻力壮的人争较仪容风度,不和逞强好胜的人争较胜负高低。
Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.
生命太短暂,不要把时间浪费在不尊重你的人身上。