The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

A healthy forest is a resilient forest.

算法研究既关乎逻辑和数学，也关乎创造力。

To eat bread without hope is still slowly to starve to death.