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

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.

In this world nothing can be said to be certain, except death and taxes.

The superior man understands what is right the inferior man understands what will sell.

A budget tells us what we can't afford, but it doesn't keep us from buying it.

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

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

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

If you listen to your fears, you will die never knowing what a great person you might have been.

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