学习数学的唯一方法就是做数学。

I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.

必须有出世者的宽广胸怀，才能入世；否则的话，很容易受到尘世的各种利诱纠缠而使自己迅速堕落；必须有入世者的深刻体验，才能出世；否则的话，很容易变得空虚无聊而使自己难以把持人生。

"I think children are naturally curious and open to new ideas, and that's something I try to capture in my books."

记忆，即使是你最珍贵的记忆，也会以惊人的速度消逝。但我不这么认为。我最珍视的记忆，我从未看到它们褪色。