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

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

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

Effort only fully releases its reward after a person refuses to quit.

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

Just because something doesn't do what you planned it to do doesn't mean it's useless.

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

Business, that's easily defined - it's other people's money.

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

If there is anything that a man can do well, I say let him do it. Give him a chance.