Security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally.

You've got to be willing to read other people's code, then write your own, then have other people review your code.

How you gather, manage, and use information will determine whether you win or lose.

Software substitution, whether it's for drivers or waiters or nurses ... it's progressing. ... Technology over time will reduce demand for jobs, particularly at the lower end of skill set. ... 20 years from now, labor demand for lots of skill sets will be substantially lower. I don’t think people have that in their mental model.

People in business understand paying money to be more efficient. You can bootstrap markets where the devices are too expensive at first because these are so valuable to some people.

Your most unhappy customers are your greatest source of learning.

Being flooded with information doesn't mean we have the right information or that we're in touch with the right people.