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

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

Success is liking yourself, liking what you do, and liking how you do it.

The whole secret of a successful life is to find out what is one's destiny to do, and then do it.

Dictionary is the only place that success comes before work. Hard work is the price we must pay for success. I think you can accomplish anything if you're willing to pay the price.

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

It is no use saying 'we are doing our best.' You have got to succeed in doing what is necessary.

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

Anticipate the difficult by managing the easy

It is the set of the sails, not the direction of the wind that determines which way we will go.

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...

You gain strength, courage and confidence by every experience in which you really stop to look fear in the face.... You must do the thing you think you cannot do.

The secret of success is constancy to purpose.

It is a cursed evil to any man to become as absorbed in any subject as I am in mine

Do one thing at a time, and while doing it put your whole soul into it to the exclusion of all else.

With any part you play, there is a certain amount of yourself in it. There has to be, otherwise it's just not acting. It's lying.

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

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

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

Don't mistake activity with achievement.

Deadlines just aren't real to me until I'm staring one in the face.