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The best moments in our lives are not the passive, receptive, relaxing times… The best moments usually occur if a person’s body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile.
In mathematics, the journey from question to answer is often more enlightening than the answer itself.
除了严于自责之外,没有胜过别人的方法;除了自强不息之外,没有超过别人的方法。
释义:以自己的欲望去顺从他人的人会昌盛,以他人的欢乐来满足自己私欲的人会灭亡。这句话强调了顺应民意与自私自利的不同结局。 
没有任何物理量可以永远呈指数级变化。