Your most unhappy customers are your greatest source of learning.

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!

To solve any problem, here are three questions to ask yourself: First, what could I do? Second, what could I read? And third, who could I ask?

You've got to be very careful if you don't know where you're going, because you might not get there.

Success is the doing, not the getting; in the trying, not the triumph. Success is a personal standard, reaching for the highest that is in us, becoming all that we can be. If we do our best, we are a success.

To those whom much is given, much is expected.

He who thinks little errs much

I'm a greater believer in luck, and I find the harder I work the more I have of it

If you aim at nothing, you will hit it every time.

Old Professors never die, they just lose their faculties.

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

Kill my boss? Do I dare live out the American dream?

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.

No one ever is defeated until defeat has been accepted as a reality.

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

No man ever achieved worthwhile success who did not, at one time or other, find himself with at least one foot hanging well over the brink of failure.

Nothing will work unless you do.

When asked, 'How do you write?' I invariably answer, 'one word at a time.'

All your dreams can come true if you have the courage to pursue them

If we all did the things we are really capable of doing, we would literally astound ourselves

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