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.

So foul and fair a day I have not seen.

True leadership means making tough decisions today that will benefit future generations.

你的雨无法落下是因为我。

"In a world of scarcity, the most valuable resource is not oil or gold, but imagination."