Sustainable growth is characterized by one simple rule: New customers come from the actions of past customers.

The only way to win is to learn faster than anyone else.

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

If the plan is to see what happens, a team is guaranteed to succeed - at seeing what happens - but won't necessarily gain validated learning - If you cannot fail, you cannot learn.

Leadership requires creating conditions that enable employees to do the kinds of experimentation that entrepreneurship requires.

What differentiates the success stories from the failures is that the successful entrepreneurs had the foresight, the ability, and the tools to discover which parts of their plans were working brilliantly and which were misguided, and adapt their strategies accordingly.

Because startups often accidentally build something nobody wants, it doesn’t matter much if they do it on time and on budget. The goal of a startup is to figure out the right thing to build - the thing customers want and will pay for - as quickly as possible.