历史学家的任务是复活那些被时间湮没的声音。

If you want to grow, you have to be willing to take risks.

理论物理学的美丽在于它能够用几个简单的方程描述宇宙，揭示出表面复杂性之下的基础简单性。

技术可以放大优秀教学的效果，但无法替代糟糕的教学。

Our frustration is greater when we have much and want more than when we have nothing and want some. We are less dissatisfied when we lack many things than when we seem to lack but one thing.