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This law (regarding the theoretical efficiency of heat engines by Mr. Joule), and the law of the maximum efficiency of heat engines, are particular cases of a general law which regulates all transformation of energy, and is the basis of the Science of Energetics.

— William John Macquorn Rankine Manual of Applied Mechanics (1858)

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Source: Manual of Applied Mechanics, (1858) London and Glasgow : Richard Griffin and Company, p. 630
Work: Manual of Applied Mechanics, 1858
Source quality: Precise citation Points to a specific work with a page, chapter, date or similar locator, so you can look it up.

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In this branch of study exactness is an essential feature; and mathematical difficulties must not be shrunk from when the nature of the subject leads to them.

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The most absurd of all their delusions commonly called the perpetual motion, or to speak more accurately, the inexhaustible source of power—is, in various forms, the subject of several patents in each year.

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The laws of thermodynamics may be regarded as particular cases of more general laws, applicable to all such states of matter as constitute Energy, or the capacity to perform work, which more general laws form the basis of the science of energetics, — a science comprehending, as special branches, the theories of motion, heat, light, electricity, and all other physical phenomena.

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