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.

Failure is not terrible, what is terrible is not daring to try.

Freedom is the recognition of necessity.

最好的水果来自最好的实践；绝不能在标准上妥协。

The task of psychology is to map the structure of consciousness.