Using the Product Development Waterfall diagram for Customer Development activities is like using a clock to tell the temperature. They both measure something, but not the thing you wanted.

Greatest risk is not development of new product, but development of customers and markets

Unless you have tested the assumptions in your business model first, outside the building, your business plan is just creative writing.

A startup is a temporary organization designed to search for a repeatable and scalable business model.

The world is run by those who show up not those who wait to be asked.

There are no facts inside the building so get the hell outside.

Startups don’t fail because they lack a product; they fail because they lack customers and a profitable business model.

Build and they will come’ is not a strategy, it’s a prayer.

The company that consistently makes and implements decisions rapidly gains a tremendous, often decisive, competitive advantage.

In a startup no facts exist inside the building, only opinions.

A business model describes how your company creates, delivers and captures value.

Never look for justice in this world, never cease to give it.

But mothers lie. It's in the job description.

There was no way in hell I was going to jeopardize my baby for my show.

However I dress it up, I was a spy and I am not proud of it.

When I hear about something that's hot, I back away from it. So I go and discover the stuff I wasn't paying attention to five years ago.

If the church is to be missionary, she must be spiritual; and if the church is to be spiritual, she must be missionary.

The truth is, the longer it goes, the harder it gets.

What's new is high oil prices and the economy hates high oil prices.

The night has always been my friend. When I go out I feel good, then I always score goals.

I must admit that we have yet to understand how [Donald Trump] will develop his idea, his pledge to make America great again, but I hope this will not hinder the development of our cooperation.