When the profits of trade happen to be greater than ordinary, over-trading becomes a general error both among great and small dealers.

Man, an animal that makes bargains.

I have no faith in political arithmetic.

By nature a philosopher is not in genius and disposition half so different from a street porter, as a mastiff is from a greyhound

It is not from the benevolence of the butcher, the brewer, or the baker that we expect our dinner, but from their regard to their own interest.

Goods can serve many other purposes besides purchasing money, but money can serve no other purpose besides purchasing goods.

Whatever work he does, beyond what is sufficient to purchase his own maintenance, can be squeezed out of him by violence only, and not by any interest of his own.