文字有治愈和毁灭的力量。
"Words have the power to heal and to destroy."
最持久的变化来自于理解问题的根本原因，而不仅仅是症状。
The Erdős discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.
过去是一个跟随我们的影子，永远存在，永远影响着我们的步伐。