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

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

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.

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

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

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

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

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

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