Your most unhappy customers are your greatest source of learning.

Success is how high you bounce after you hit bottom.

I avoid looking forward or backward, and try to keep looking upward.

If you want to be inventive, you have to be willing to fail.

The critical ingredient is getting off your butt and doing something.

To do great things is difficult; but to command great things is more difficult.

It’s easier to ask forgiveness than it is to get permission.

You may be disappointed if you fail, but you are doomed if you don’t try.

How you climb a mountain is more important than reaching the top.

The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.

Arriving at one goal is the starting point to another.

Whether you think you can or you can’t, you’re right.

The critical ingredient is getting off your butt and doing something. It’s as simple as that. A lot of people have ideas, but there are few who decide to do something about them now. Not tomorrow. Not next week. But today. The true entrepreneur is a doer, not a dreamer.

If you’re not living life on the edge, you’re taking up too much space.

The best time to plant a tree is twenty years ago. The second best time is now.