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The desire for verification is understandable but cannot always be satisfied.

因害怕文字獄而避開，著書只是為了謀生。

Strategy is about making choices, trade-offs; it's about deliberately choosing to be different.

愚蠢的人畏懼生病，卻經(jīng)常生病，明智的人居安思危，危險才不會降臨。

The true power of mathematics lies in its ability to reveal hidden patterns and structures in the chaos of the universe.

教育者的心必須是一團活生生的火焰，是溫暖和光明的源泉。