Though the principles of the banking trade may appear somewhat abstruse, the practice is capable of being reduced to strict rules. To depart upon any occasion from those rules, is consequence of some flattering speculation of extraordinary gain, is almost always extremely dangerous, and frequently fatal to the banking company which attempts it.
Adam SmithGoods can serve many other purposes besides purchasing money, but money can serve no other purpose besides purchasing goods.
Adam SmithIn general, if any branch of trade, or any division of labour, be advantageous to the public, the freer and more general the competition, it will always be the more so.
Adam SmithWhatever 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.
Adam Smith