If you're interested in a book that will steadily grow and sell for a very long time, I promise you I will give you that.

The only time I waste is time I spend doing something that, in my gut, I know I shouldn't. If I choose to spend time playing video games or sleeping in, then it's time well spent, because I chose to do it. I did it for a reason - to relax, to decompress or to feel good, and that was what I wanted to do.

Believing that your competition is stronger and better than you pushes you to better yourselves.

Good marketing speaks to human beings - the way human beings understand and take in information.

Don't quit. Never give up trying to build the world you can see, even if others can't see it. Listen to your drum and your drum only. It's the one that makes the sweetest sound.

If we were good at everything we would have no need for each other.

If you want to be a great leader, remember to treat all people with respect at all times. For one, because you never know when you'll need their help. And two, because it's a sign you respect people, which all great leaders do.