计算的本质不仅在于符号的操作，更在于对这些操作所代表意义的深刻理解。

世界不仅仅是感觉的总和，而是一个有组织的整体。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.

To live is the rarest thing in the world. Most people exist, that is all.