Rigor in proof is what separates mathematics from all other sciences.

In language， there is no one-to-one correspondence between words and the things they refer to.

The most important thing for an actor is to be honest. If you can fake that, you've got it made.

There are two ways to extend a business. Take inventory of what you are good at and extend out from your skills. Or determine what your customers need and work backwards, even if it requires learning new skills.

"The hardest part of design is keeping features out."

沙漠之所以美丽，是因为在某个角落藏着一口井。