It usually takes me more than three weeks to prepare a good impromptu speech.

An economist's guess is liable to be as good as anybody else's.

The hardest thing to understand in the world is the income tax.

Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.

It's not what you pay a man, but what he costs you that counts.

If you can build a business up big enough, it's respectable.

Sometimes when you innovate, you make mistakes. It is best to admit them quickly, and get on with improving your other innovations.

If one does not know to which port one is sailing, no wind is favorable.

Being good in business is the most fascinating kind of art. Making money is art and working is art and good business is the best art.

There are no secrets to success. It is the result of preparation, hard work, and learning from failure.