The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence.

Every action has its pleasures and its price.

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

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

If you treat people right they will treat you right - ninety percent of the time.

What one has to do usually can be done.

He who thinks little errs much

I've always found the second book in a series is the hardest to write.

Never make excuses. Your friends don't need them and your foes won't believe them.

Success comes to those who become success conscious. Failure comes to those who indifferently allow themselves to become failure conscious.

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

Success is doing ordinary things extraordinarily well.

By failing to prepare, you are preparing to fail.

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

It has been my observation that most people get ahead during the time that others waste

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

It is amazing how much can be accomplished if no one cares who gets the credit.

One of the greatest discoveries a person makes, one of their great surprises, is to find they can do what they were afraid they couldn't do.

Moving from chair to chair, from coffee machine to coffee machine is the limit of my action in most films. But I enjoy being cast in them because I love watching them.

You never achieve success unless you like what you are doing.

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.