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

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

Hell, there are no rules here - we're trying to accomplish something.

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

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

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

I am certainly not one of those who need to be prodded. In fact, if anything, I am the prod.

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

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.

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