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

To invent, you need a good imagination and a pile of junk.

Whosoever desires constant success must change his conduct with the times.

Nothing is particularly hard if you divide it into small jobs

It's fine to celebrate success but it is more important to heed the lessons of failure.

Success is most often achieved by those who don't know that failure is inevitable.

Opportunity is missed by most people because it is dressed in overalls and looks like work.

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.

I have not failed. I've just found 10,000 ways that won't work.

What I cannot create, I do not understand.

If everyone is moving forward together, then success takes care of itself.

Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

To those whom much is given, much is expected.

Be quick, but don't hurry.

There is but one dependable method of accumulating and legally holding riches, and that is by rendering useful service.

Success is neither magical nor mysterious. Success is the natural consequence of consistently applying the basic fundamentals.

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

Chop your own wood and it will warm you twice

Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding. Hold this picture tenaciously and never permit it to fade. Your mind will seek to develop this picture!

The man who is swimming against the stream knows the strength of it.

All achievement, all earned riches, have their beginning in an idea.