数学中最激动人心的时刻是当你看到以前似乎不相关的事物之间的联系时。
The most exciting moments in mathematics are when you see connections between things that seemed unrelated before.
Never stop learning; the world is always changing.
The coal industry must evolve or risk becoming obsolete. Adaptation is the key to survival.
错误同真理的关系，就象睡梦同清醒的关系一样。一个人从错误中醒来，就会以新的力量走向真理。