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 SmithIn the long-run the workman may be as necessary to his master as his master is to him, but the necessity is not so immediate.
Adam Smith