Learn by doing. Learn through experiences. And this goes back to Steve Jobs' thing - which is the way you open up your knowledge of the world is by discovering it and learning about it, not through books, but by being there.

Every person I talk to has a story about how their smoke alarm went off or woke them up with a battery beeping. So you take it off the wall and you take the battery out and say screw this. They hate the products.

I'm always doubtful. Everything I do is always doubtful. When you're trying to differentiate, there's going to be this gut sense, is this right? If you're not having doubt, then you're not pushing it hard enough, or you're not looking at the details close enough. You need to be feeling that doubt every single day.

People buy products, and they want to understand what those things are and how they are applicable to their life.

If you're not having doubt, you're not pushing the boundaries far enough.

Every team member who brings intelligence, experience and passion to their creations should be called an artist or designer.

It's easy to solve a problem that everyone sees, but it's hard to solve a problem that almost no one sees.

There are a lot of designers who think they understand technology and a lot of technology guys who think they understand design. But to put them together and make it robust and repeatable for the mass market? It's an art.

We built the iPod in weeks. It had to be what I thought it was going to be because there wasnt time for endless refinements.

I started designing the greenest the most connected home before the iPhone and the iPad.

We're thrilled to join Google. With their support, Nest will be even better placed to build simple, thoughtful devices that make life easier at home, and that have a positive impact on the world.

Usually, the biggest companies are not the most dynamic.

Over the next ten years, everything that has a cord is going to have data in it.