真正的幸福来自于对自己和他人的爱。

A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.

In every story, there is a hidden truth waiting to be uncovered.

Confidence is the key to everything.

Those who can imagine anything,can create the impossible.

The best illustrations are those that leave room for the reader's imagination.

知识是经验的产物。

城市冰冷而空旷，没人在周围评判我。

计算复杂性的本质是理解什么可以被有效地计算的极限。