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True leadership means making tough decisions today for a better tomorrow.

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 environment is not a mosaic of stimuli, but a field of forces in which every part is dynamically related to every other part.

蓬草長在麻地里，不用扶它也能挺立；把白沙放在黑土里，白沙也就變成黑的了。這兩個例子說明，環境對一個人的影響，是非常大的，所以才有了《孟母三遷》的故事。