善不是出自内心的，不能保留；行为不能从自身辩明的，不能去做。善不是出自内心的，只能够勉强支撑一时，必然不能长久。所以也只能使伪善。
The act of writing is an act of resistance against oblivion.
The difference between genius and stupidity is that genius has its limits.
Theorems are eternal; their proofs are ephemeral.
最好的电影是那些在你离开电影院后仍久久留在你心中的电影。
The future of coal lies not in its quantity but in how cleanly and efficiently we can use it.
The more we learn about sensory biology, the more we realize how intricate and finely tuned our nervous system is.