Waste is criminal. The old proverb says, "Waste not, want not." And it is true.
Anybody may drink at the fountain of knowledge, but you've got to bring your own cup.
The farther you look back into the history of industry and invention, the more you will be impressed with the fact that almost everything has improved as our ability to produce it has increased.
Wireless telegraphy would never have come about had not the other kind preceded, and it is impossible to imagine the phonograph's being ahead of the telephone.
Without illuminating gas and gasoline, Welsbach lights would never have been thought of or possible.