小人专门期望他人的恩惠，但受恩后就忘；君子则不轻易受人恩惠，若受恩于人，则必定想法图报。
Mathematics is not a spectator sport. You have to do it to understand it.
I always try to transform my weaknesses into my strengths.
每一代人都需要一场新的革命。