Well done is better than well said.

I don't believe people die from hard work. They die from stress and worry and fear -- the negative emotions. Those are the killers, not hard work. The fact is, in our society today, most people don't understand what hard work is all about.

Without a sense of urgency, desire loses its value.

Coming together is the beginning. Keeping together is progress. Working together is success.

I don't want to achieve immortality through my work... I want to achieve it through not dying.

The best way to destroy an enemy is to make him a friend.

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

If you're bored with life, if you don't get up every morning with a burning desire to do things, you don't have enough goals.

Pleasure in the job puts perfection in the work.

Purity, patience, and perseverance are the three essentials to success and, above all, love.

For a man to conquer himself is the first and noblest of all victories.

A man paints with his brains and not with his hands.

Nothing will work unless you do.

Change yourself and your work will seem different.

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

If it's me against 48, I feel sorry for the 48.

Anticipate the difficult by managing the easy

We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.

Success means we go to sleep at night knowing that our talents and ablities were used in a way that served others.

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

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