The greatest enemy of a good plan is the dream of a perfect plan.

Self-education is, I firmly believe, the only kind of education there is.

Sustainability is not a choice, it is a responsibility.

Don't drift into self-pity because it doesn't solve any problems.

"I'm not a businessman, I'm a business, man."

The only way to learn a new programming language is by writing programs in it.

不要为未来担忧，不要为过去哭泣。