The best way to cheer yourself up is to try to cheer somebody else up.

除了诱惑，我什么都能抵抗。

韧性不是人们要么有要么没有的特质。它涉及任何人都可以学习和发展的行为、思想和行动。

真正的诗歌是使我们更加人性的诗歌。

The most successful forestry companies will be those that put sustainability at the core of every decision.

It is not a lack of love，but a lack of friendship that makes unhappy marriages.

You’ve got to have models in your head. And you’ve got to array your experience—both vicarious and direct—on this latticework of models. You may have noticed students who just try to remember and pound back what is remembered. Well, they fail in school and in life. You’ve got to hang experience on a latticework of models in your mind.

学习数学的唯一方法就是做数学。

谁统治东欧，谁就掌控了心脏地带；谁统治心脏地带，谁就掌控了世界岛；谁统治世界岛，谁就掌控了世界。