I have been insane on the subject of money-making all my life.
I am not afraid of my enemies, but by God, you must look out when you get among your friends.
There is no friendship in trade.
You have undertaken to cheat me. I won't sue you, for the law is too slow. I'll ruin you.
Never tell anyone what you are going to do till you've done it.
If I had learned education I would not have had time to learn anything else.