Few things are impossible to diligence and skill. Great works are performed not by strength, but perseverance.

Without a sense of urgency, desire loses its value.

Be interesting, be enthusiastic... and don't talk too much.

Thinking is the hardest work there is, which is probably the reason so few engage in it.

People refuse to take chances in business, because they fear the criticism which may follow if they fail.

Innovation distinguishes between a leader and a follower.

I am thankful to all those who said NO to me. It's because of them I did it myself.

The best of artists has no conception that the marble alone does not contain within itself.

The world does not pay men for that which they 'know'. It pays them for what they do, or induce others to do.

Whenever you are asked if you can do a job, tell 'em, 'Certainly I can!' Then get busy and find out how to do it.

I never pick up an item without thinking of how I might improve it.

The secret of success in life is for a man to be ready for his opportunity when it comes.

There is one weakness in people for which there is no remedy. It is the universal weakness of lack of ambition.

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal.

I do know that when I am 60, I should be attempting to achieve different personal goals than those which had priority at age 20.

Whether it's Google or Apple or free software, we've got some fantastic competitors and it keeps us on our toes.

If you think of yourselves as helpless and ineffectual, it is certain that you will create a despotic government to be your master. The wise despot, therefore, maintains among his subjects a popular sense that they are helpless and ineffectual.

Eighty percent of success is showing up.

Purity, patience, and perseverance are the three essentials to success and, above all, love.

The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather a lack in will.

Tell the audience what you're going to say, say it; then tell them what you've said.