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.

I don't believe in luck, I believe in preparation meeting opportunity.

Psychology is the science of mental life in its adaptive relations.

过去是一个异国他乡；他们做事的方式不同。

你必须接受有时你是鸽子，有时你是雕像。

Mental life is a continuous adjustment to internal and external demands.