Definitions: (1) careful, efficient, and prudent regarding the use of resources; thrifty; (2) operating with little waste or at a savings

Quote: “All things are good in their way,” said Shaggy, “but we may have too much of any good thing. And I have noticed that the value of anything depends upon how scarce it is, and how difficult it is to obtain.” — L. Frank Baum (1856-1919) Tik-Tok of Oz

Comment: You spend a few dollars and get some bread. You eat the bread, use its energy, and it is gone. You spend more dollars on gasoline, use its energy, and it is gone. The sun will burn out in a few billion years – then it will be gone. On the other hand, the economy – even the physics – of a quality is the opposite: as you use it, it not only regenerates itself, it actually builds more substance. The only way to waste it is to not use it.