唯一比摇滚明星更糟糕的是有事业的摇滚明星。
The only thing worse than a rock star is a rock star with a cause.
The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.
徒步旅行的真正魅力不在于看到物体，而在于它们激发的情感。