坚持与固执之间的区别在于一个源自坚强的意志，另一个源自坚强的拒绝。
地球形状的问题本质上是势理论中的一个问题。
The true journey is not about seeing new landscapes, but about having new eyes.
To be a philosopher is not merely to have subtle thoughts, nor even to found a school, but so to love wisdom as to live according to its dictates.
理论计算机科学的重要性在于它能够为实际应用提供基础。
The story is told by the dead, and the dead have no need for lies.
