Waste cannot be accurately told, though we are sensible how destructive it is. Economy, on the one hand, by which a certain income is made to maintain a man genteelly; and waste, on the other, by which on the same income another man lives shabbily, cannot be defined. It is a very nice thing; as one man wears his coat out much sooner than another, we cannot tell how.

Dr. Johnson's Table Talk (ed. 1798)