Wise men have but few confidants, and cunning ones none.
It is better to know nothing than to know what ain't so.
There are only two qualities in the world: efficiency and inefficiency; and only two sorts of people: the efficient and the inefficient.
Take the humbug out of this world, and you haven't much left to do business with.
You should always live within your income, even if you have to borrow to do so.
Money will buy a pretty good dog, but it won't buy the wag of his tail.