There are only two things you have to know about business: build something users love, and make more than you spend. - Paul Graham

When I finished the first draft of an essay in high school, I'd scan through it hoping it was long enough. Now when I finish a first draft I scroll through it hoping it's not too long.

Some of the most successful founders start out tentative and lukewarm. Especially the young ones, who are often far from certain they want to run a startup. As they should be, because it's not for everyone, and they don't know yet what they like.

If you want to create wealth (in the narrow technical sense of not starving), then you should be especially skeptical about any plan that centers on things you like doing.