One must be sane to think clearly, but one can think deeply and be quite insane.

When things go wrong don't go with them

If you are not willing to risk the unusual, you will have to settle for the ordinary.

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

I will prepare and some day my chance will come.

If I have ever made any valuable discoveries, it has been due more to patient attention, than to any other talent.

Success is going from failure to failure without loss of enthusiasm.

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

Earning happiness means doing good and working, not speculating and being lazy. Laziness may look inviting, but only work gives you true satisfaction.

Success is steady progress toward one's personal goals

Any fact facing us is not as important as our attitude toward it, for that determines our success or failure

Without a sense of urgency, desire loses its value.

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

If you are the master be sometimes blind, if you are the servant be sometimes deaf.

If you do not change direction, you may end up where you are heading.

Work does not kill a man, it is worry, irregularity and uncertainty that kill.

Find out what you really love to do, and then find a way to make a good living doing it.

From each according to his abilities, to each according to his needs.

Success means we go to sleep at night knowing that our talents and ablities were used in a way that served others.

Because ideas have to be original only with regard to their adaptation to the problem at hand, I am always extremely interested in how others have used them...

The way to get started is to quit talking and begin doing.