一个人绝对不可在遇到危险的威胁时，背过身去试图逃避。若是这样做，只会使危险加倍。但是如果立即面对它毫不退缩，危险便会减半。

The principal effect of the progress of society is to increase the quantity of wealth, and the power of distributing it.

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 saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.

质量和道德永远不应该为短期利益而妥协。

语言是我们改变世界的最强大工具。