The secret of success is constancy to purpose.

The secret of success in life is for a man to be ready for his opportunity when it comes.

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

It's a terrible thing to look over your shoulder when you are trying to lead - and find no one there

What one has to do usually can be done.

Nothing will work unless you do.

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

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

If your business is only to sweep a crossing, remember it is your duty to make that crossing the best swept of the world.

I hope that I may always desire more than I can accomplish.

When you know what you want, and want it bad enough, you will find a way to get it.

Obstacles are those frightful things you see when you take your eyes off your goals.

Leadership and learning are indispensable to each other.

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

The world does not pay men for that which they 'know'. It pays them for what they do, or induce others to do.

There is nothing impossible to him who will try.

Personally, I enjoy working about 18 hours a day. Besides the short catnaps I take each day, I average about four to five hours of sleep per night.

There is one weakness in people for which there is no remedy. It is the universal weakness of lack of ambition.

I don't like that man. I must get to know him better.

Sell a man a fish, he eats for a day, teach a man how to fish, you ruin a wonderful business opportunity.

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.