The mark of the superior thinker is his or her ability to accurately predict the consequences of doing or not doing something.

My secret for writing is going back to clarity. I'm very clear about what I want to accomplish-the goal-and then the next two are focus and concentration. And I've probably spent my whole life both practicing those two and teaching them. Focus. Focus on a single point and concentration. And concentrating on a single thing till it's done.

The more you take on, the more efficient you become. You only learn how much you can actually do by trying to do too much.

Do your very best on every task. Imagine that everyone is watching even when no one is watching.

It doesn't matter where you are coming from. All that matters is where you are going.

The product has to work. It has to be a good product. An enormous number of them are all hype with no value at all. People get into them because they want to make a lot of quick, easy money.

Your ability to set and achieve goals is perhaps the most important skill you can ever develop.