Our stupidity may be clearly proved by the fact that we hold that "buying" refers only to the objects for which we pay cash, and we regard as free gifts the things for which we spend our very selves. These we should refuse to buy, if we were compelled to give in payment for them our houses or some attractive and profitable estate; but we are eager to attain them at the cost of anxiety, of danger, and of lost honour, personal freedom, and time; so true it is that each man regards nothing as cheaper than himself.
