【释义】明智的君主反思自己的短处,从而不断完善自己;昏庸的君主掩饰自己的短处,永远处于愚昧无知的状态。
数学的本质不是使简单的事情复杂化,而是使复杂的事情简单化。
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.