Nicolas_Léonard_Sadi_Carnot

"To take away to-day from England her steam-engines would be to take away at the same time her coal and iron. It would be to dry up all her sources of wealth, to ruin all on which her prosperity depend…"

"f we should find about us only bodies as hot as our furnaces, how can we condense steam? What should we do with it if once produced?"

"We shall have only when the laws of Physics shall be extended enough, generalized enough, to make known beforehand all the effects of heat acting in a determined manner on any body."

"The phenomenon of the production of motion by heat has not been considered from a sufficiently general point of view. We have considered it only in machines... the phenomenon is... incomplete. It beco…"

"e have just described the re-establishment of equilibrium in the caloric, its passage from a... heated body to a cooler one."

"The production of motion in steam-engines is always accompanied by... the re-establishing of equilibrium in the caloric; that is, its passage from a body in which the temperature is more or less eleva…"

"hen a body has experienced any changes, and when after a certain number of transformations it returns to precisely its original state, that is, to that state considered in respect to density, to tempe…"

"Wherever there exists a difference of temperature... it is possible to have also the production of impelling power. ...All substances in nature can be employed for this purpose, all are susceptible of…"