The art of leadership is saying no, not yes. It is very easy to say yes.

Success in business requires training and discipline and hard work. But if you’re not frightened by these things, the opportunities are just as great today as they ever were.

Whatever the mind can conceive and believe, the mind can achieve

The virtue lies in the struggle, not in the prize.

The only people who never fail are those who never try.

Make it happen now, not tomorrow. Tomorrow is a loser’s excuse.

Don't waste your life in doubts and fears: Spend yourself on the work before you, well assured that the right performance of this hour's duties will be the best preparation for the hours or ages that follow it.

There is only one way to avoid criticism: Do nothing, say nothing, and be nothing.

If you’re not learning while you’re earning, you’re cheating yourself out of the better portion of your compensation.

You shouldn’t focus on why you can’t do something, which is what most people do. You should focus on why perhaps you can, and be one of the exceptions.

The art of being wise is knowing what to overlook.

My number one piece of advice is: you should learn how to program.

The fastest way to change yourself is to hang out with people who are already the way you want to be.

You miss 100 percent of the shots you don’t take.

The best time to plant a tree was 20 years ago. The second best time is now.

Life can be pulled by goals just as surely as it can be pushed by drives.

Don’t treat your customers like a bunch of purses and wallets.

It takes humility to realize that we don’t know everything, not to rest on our laurels and know that we must keep learning and observing. If we don’t, we can be sure some startup will be there to take our place.

If I find 10,000 ways something won’t work, I haven’t failed. I am not discouraged, because every wrong attempt discarded is often a step forward.

Teachers open the door. You enter by yourself.