Literature is the voice of the human soul.

"To be a spy is to live in a world of constant doubt and suspicion."

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

眼睛是什么也看不见的，一定要用心去看。

Sometimes, the wicked will tell us things just to confuse us–to haunt our thoughts long after we've faced them.

The world is not a pleasant place to be, but it is the only one we have.