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

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

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

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

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

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

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

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

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