If someone is difficult to talk to, if someone cannot communicate clearly, it's a real problem in terms of their likelihood to work out.

Because so few people make an actual long term commitment to what they're building, the ones that do have a huge advantage.

No matter what you choose, build stuff and be around smart people.

Every first time founder waits too long, everyone hopes that an employee will turn around. But the right answer is to fire fast.

Firing people is one of the worst parts of running a company. Actually in my own experience, I think it is the worst.

Good startups usually take 10 years.

Be suspicious of any work that is not building product or getting customers.