那些不牢记过去的人，注定要重复过去发生的事。

I always tell my students that it's okay to make mistakes, as long as you learn from them.

物理学的语言是数学，但其意义是哲学。

不要轻易放弃，坚持到底就是胜利。

Liberty is the right of doing whatever laws permit.

文学的价值不在于它的流行程度，而在于它能否触动读者的内心。

我们不是从祖先那里继承了地球，而是从子孙那里借来的。

The rise of China will inevitably lead to conflict with the United States, as it challenges the existing balance of power.