Do not let yourself be tainted with a barren skepticism.

Escribir es un acto de amor, de entrega total a las palabras.

不要为那些不愿在你身上花费时间的人而浪费你的时间。

心理学的方法必须是客观的，即使研究主观现象时也是如此。

So, I went through life constantly practicing this model of disciplinary approach. Well, I can’t tell you what that’s done for me. It’s made life more fun. It’s made me more constructive. It’s made me more helpful to others. It’s made me enormously rich.

抽象的力量使数学能够超越物理现实的限制。