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

If you cannot work with love but only with distaste, it is better that you should leave your work.

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

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

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

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

No enterprise is more likely to succeed than one concealed from the enemy until it is ripe for execution.

I think that there is nothing, not even crime, more opposed to poetry, to philosophy, ay, to life itself than this incessant business.

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

Failure doesn't mean you are a failure it just means you haven't succeeded yet.