We crave explanations for most everything, but innovation and progress happen when we allow ourselves to embrace uncertainty.

Poor leaders push us towards the goal. Great leaders guide us through the journey.

I cannot tell you how long it takes for your exercise to work. If you haven't seen any results in a year or six months you're doing something wrong.

If you're looking for a book that will spike in sales and then go away and then spike again when it comes out in paperback, your normal model, I definitely won't give you that.

Anyone can sell product by dropping their prices, but it does not breed loyalty.

I can't stand those people, speakers in a room, they say this all the time, "If I can just help one person in this room, I've done my job." You have an audience of 500 people and your standard of success is one person? That's terrible. If you help one person in the room, you're an abject failure. You have to change something.

Progress and innovation happen when you set unrealistic goals.