If you cannot fail, you cannot learn.

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.

As you consider building your own minimum viable product, let this simple rule suffice: remove any feature, process, or effort that does not contribute directly to the learning you seek.

The goal of every startup experiment is to discover how to build a sustainable business around that vision.

The only person who can put you out of business, in the early days, is yourself.

Progress in manufacturing is measured by the production of high quality goods. The unit of progress for Lean Startups is validated learning-a rigorous method for demonstrating progress when one is embedded in the soil of extreme uncertainty.

The hardest part is the grueling work of constantly being wrong.