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最好的老师是那种建议而不是教条化,并激发听众自我教学愿望的人。
The best teacher is the one who suggests rather than dogmatizes, and inspires his listener with the wish to teach himself.
No man really knows about other human beings. The best he can do is to suppose that they are like himself.
这值得说两遍:量两次才切一次。
灵魂是一团必须用美来滋养的火。
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.