无愧于口,不若无愧于身;无愧于身,不若无愧于心。
言行一致,内心纯洁是最高的德行。
Mathematics is an art, and as an artist, you have to be honest with yourself.
压力可以压垮管道,也可以造就钻石。
The next generation will judge us by what we leave in the water, not what we take out.