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The following are related quotes:
- “It is the fact that all forms of energy, of whatever sort, may be measured in units of ergs, joules, or calories that is of the utmost importance. The solution of the social problems of our time depends upon the recognition of this fact. A dollar [unit of money] may be worth — in buying power — so much today and more or less tomorrow, but a unit of work [J] or heat [J/K] is the same in 1900, 1929, 1933 or the year 2000.”
- Energy certificate
- Money – Hmolpedia 2020.