The Erdős discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.
埃尔德什差异问题让我着迷，因为它陈述起来如此简单，但含义却如此深刻。
The difference between ordinary and extraordinary is that little extra.
Suffering! We owe to it all that is good in us, all that gives value to life; we owe to it pity, we owe to it courage, we owe to it all the virtues.
The reality is: sometimes you lose. And you’re never too good to lose. You’re never too big to lose. You’re never too smart to lose. It happens.
It's so much darker when a light goes out than it would have been if it had never shone.
变化的速度要求我们忘记的和学习的一样多。
我们不是从祖先那里继承地球；我们是从子孙那里借来的——这在林业中尤其如此。