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

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

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

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

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

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

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

An economist's guess is liable to be as good as anybody else's.

Business is never so healthy as when, like a chicken, it must do a certain amount of scratching around for what it gets.

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