If you don't know who your customer is, you don't know what quality is.

In my first start-up, I had an initial advertising budget of $5 per day total. That would buy us 100 clicks per day. At $5 per day, marketing people scoffed and said that is too small to matter. But if you think about it, to an engineer, 100 real humans everyday giving your product a try means you can really start improving.

A solid process lays the foundation for a healthy culture, one where ideas are evaluated by merit and not by job title.

Start-ups make so many mistakes that the challenge to identify the root cause of a failure is tough. But believing in your own plan is probably the worst.

The way forward is to learn to see every startup in any industry as a grand experiment.

Entrepreneurship is not really building a product, it's not having an idea, it's not being in the right place at the right time. It's fundamentally company building.

The United States is locked in a new arms race for that most precious resource - the future entrepreneurs upon whom economic growth depends. Substantial research shows that immigrants play a key role in American job creation.