Once you consent to some concession, you can never cancel it and put things back the way they are.
We don't have a monopoly. Anyone who wants to dig a well without a Hughes bit can always use a pick and shovel.
I'm not a paranoid deranged millionaire.
Every man has his price, or a guy like me couldn't exist.
Money can't buy happiness.
Play off everyone against each other so that you have more avenues of action open to you.