执德不弘，信道不笃，焉能为有？焉能为亡？
一个人固守道德而不能发扬光大，信仰主张又不能坚定不移，这种人有他不能算有，没有他不能算无。
La literatura no es otra cosa que un sueño dirigido.
I think that in mathematics, and maybe in life, you have to be willing to be a little bit lost.
The power of literature lies in its ability to disturb, to question, to undermine what is taken for granted.
2001：贝索斯致股东信《我们始终坚持现金流为王》