Never stop learning because the world never stops changing.

It's probably as unlikely that you would nowadays become as rich and famous as Bill Gates, as it was unlikely in the17th century that you would accede to the ranks of the French aristocracy. But the point is, it doesn't feel that way. It's made to feel, by magazines and other media outlets, that if you've got energy, a few bright ideas about technology, a garage -- you, too, could start a major thing.

建筑师必须是空间的园丁。

学习数学的唯一方法就是做数学。