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.

The trouble with most people is that they think with their hopes or fears or wishes rather than with their minds.

写作是一种不被干扰的说话方式。

奋斗永不停歇。

信件是传记作者的金矿；它们揭示了官方记录所隐藏的东西。

To study the mind is to study adaptation in action; every thought is a tool for living.