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Nicolas Léonard Sadi Carnot

91 quotes

“To neglect the opportunity of an innocent pleasure is a loss to ourselves.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Recherché pleasures cause simple pleasures to lose all their attractions.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“It may sometimes be necessary to yield the right, but how is one to recover it when wanted?”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Love is almost the only passion that the good man may avow. It is the only one which accords with delicacy.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Do nothing that all the world may not know.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“The truly wise man is he who loves virtue for its own sake.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“We say that man is an egotist, and nevertheless his sweetest pleasures come to him through others. He only tastes them on condition of sharing them.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“If one could continually satisfy his desires, he would never have time to desire. Happiness then is necessarily composed of alternatives. It could not exist at a constant level.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“To each conqueror can be said, when he has ceased tormenting our poor globe, "Would you not have been able to tilt equally well against a little globe of pasteboard?”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“The laws of war, do they say? As if war were not the destruction of all laws.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“War has been represented as necessary to prevent the too rapid increase of the population, but war mows down the flower of the young men, while it spares the men disgraced by nature. Hence it tends to the degeneration of the species.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“The decadence of the Greeks and Romans... proves the influence of institutions upon customs.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“According to the system of modern economists, it would be desirable that the government should interfere as little as possible in the commerce and industry of the country. Nevertheless we cannot deny that in certain circumstances this intervention is very useful.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Taxes are regarded by economists as an evil, but as a necessary evil, since they provide for public expenses. Consequently, economists think that if the government possessed sufficient revenues, in domains for example, the suppression of all taxes would be a desirable measure.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Taxes are a means of influencing production and commerce to give to them a direction which they would not naturally have taken. Such an influence may undoubtedly have disagreeable consequences if the taxes are imposed without discrimination or exclusively for a fiscal purpose, but it is entirely otherwise if wisdom and tact preside at their institution.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Men attribute to chance those events of the causes of which they are ignorant. If they succeed in divining these causes, chance disappears. To say that a thing has happened by chance, is to say that we have not been able to foresee it. I do not myself believe that any other acceptation can be given to this word. What to an ignorant man is chance, cannot be chance to one better instructed.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“If human reason is incapable of discovering the mysteries of Divinity, why has not Divinity made human reason more clear-sighted?”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“God cannot punish man for not believing when he could so easily have enlightened and convinced him.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“If God is absolutely good, why should He punish the sinner for all eternity, since He does not lead him to good, or give him an example?”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“According to the doctrine of the church, God resembles a proposing enigmas, and devouring those who cannot guess them.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“The church attributes to God all human passions—anger, desire for vengeance, curiosity, tyranny, partiality, idleness.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“If Christianity were pruned of all which is not Christ, this religion would be the simplest in the world.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“What motives have influenced the writers who have rejected all religious systems? Is it the conviction that the ideas which they oppose are all injurious to society? Have they not rather included in the same proscription religion and the abuse of it?”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“The belief in an all-powerful Being, who loves us and watches over us, gives to the mind great strength to endure misfortune.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“A religion suited to the soul and preached by men worthy of respect would exercise the most salutary influence upon society and customs.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“[C]hanges caused in the temperature of bodies by motion have been very little studied. This class of phenomena merits... attention... When bodies are in motion, especially when that motion disappears, or when it produces motive power, remarkable changes take place in the distribution of heat, and perhaps in its quantity.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“The Collision of Bodies. ...[I]n the collision of bodies there is always expenditure of motive power. Perfectly elastic bodies only form an exception, and none such are found in nature.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“[A]lways in the collision of bodies there occurs... an elevation of temperature. We cannot, as did M. Berthollet, attribute the heat set free in this case to the reduction of the volume of the body...”
Nicolas Léonard Sadi Carnot (1796–1832) first seen 1803 wikiquote, CC BY-SA 4.0 source
Recorded in: Ref: , Essai de statique chimique (1803) or An Essay on Chemical Statics (1804) Tr. B. Lambert Vol. 1, Sect. III Of Caloric, p. 141.
“It would seem... that heat set free should be attributed to the friction of the molecules of the metal, which change place relatively to each other, that is, the heat is set free just where the moving force is expended. ...We may also cite... the heat produced by the extension of a metallic rod just before it breaks... the greater the elongation before rupture, the more considerable is the elevation of temperature.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“[[Light|[L]ight]] is generally regarded as the result of a vibratory movement of the ethereal fluid. Light produces heat, or at least accompanies the radiating heat, and moves with the same velocity as heat. Radiating heat is then a vibratory movement. It would be ridiculous to suppose that it is an emission of matter while the light which accompanies it could be only a movement.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Could a motion (that of radiating heat) produce matter (caloric)? No, undoubtedly; it can only produce a motion. Heat is then the result of a motion. Then it is plain that it could be produced by the consumption of motive power, and that it could produce this power.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Is heat the result of a vibratory motion of molecules? If... so, quantity of heat is simply quantity of motive power. As long as motive power is employed to produce vibratory movements, the quantity of heat must be unchangeable... but when it passes into movements of sensible extent, the quantity of heat can no longer remain constant.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Liquuefaction of bodies, solidification of liquids, crystallization—are they not forms of combinations of integrant molecules?”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Heat is simply motive power, or rather motion which has changed form. It is a movement among the particles of bodies. Wherever there is destruction of motive power there is, at the same time, production of heat in quantity exactly proportional to the quantity of motive power destroyed. Reciprocally, wherever there is destruction of heat, there is production of motive power.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“[[Energy|[M]otive power]] is, in quantity, invariable in nature; that it is, correctly speaking, never either produced or destroyed. It is true that it changes form, that is, it produces sometimes one sort of motion, sometimes another, but it is never annihilated.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“What happens... in a steam-engine... ? The caloric developed in the furnace by the effect of the combustion traverses the walls of the boiler, produces steam, and in some way incorporates itself with it. The latter carrying it away, takes it first into the cylinder, where it performs some function, and from thence into the condenser, where it is liquefied by contact with the cold water... [T]he cold water of the condenser takes possession of the caloric... It is heated by the intervention of the steam as if it had been placed directly over the furnace. The steam is here only a means of transporting the caloric.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“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 changes of volume, of successive contractions and dilatations, through the alternation of heat and cold. All are capable of overcoming in their changes of volume certain resistances... A solid... A liquid... An aeriform fluid... If it is enclosed in an expansible space, such as a cylinder provided with a piston, it will produce movements of great extent. Vapors of all substances capable of passing into a gaseous condition, as of , of mercury, of , etc., may fulfil the same office as vapor of water. ...Most of these... have been proposed, many even have been tried, although... without remarkable success.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“[W]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 temperature, to mode of aggregation—let us suppose, I say, that this body is found to contain the same quantity of heat that it contained at first, or else that the quantities of heat absorbed or set free in these different transformations are exactly compensated. This fact has never been called in question. It was first admitted without reflection, and verified afterwards in many cases by experiments with the . To deny it would be to overthrow the whole theory of heat to which it serves as a basis. For the rest, we may say in passing, the main principles on which the theory of heat rests require the most careful examination. Many experimental facts appear almost inexplicable in the present state of this theory.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“Vary the mental and bodily exercises with dancing, horsemanship, swimming, fencing with sword and with sabre, shooting with gun and pistol, skating, the sling, stilts, tennis, bowls; hop on one foot, cross the arms, jump high and far, turn on one foot propped against the wall, exercise in shirt in the evening to get up a perspiration before going to bed; turning, joinery, gardening, reading while walking, declamation, singing, violin, versification, musical composition; eight hours of sleep; a walk on awakening, before and after eating; great sobriety; eat slowly, little, and often; avoid idleness and useless meditation.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“When a hypothesis no longer suffices to explain phenomena, it should be abandoned. This is the case with... caloric as matter, as a subtile fluid. The experimental facts tending to destroy this theory are as follows: (1) The development of heat by percussion or the friction of bodies (experiments of Rumford, friction of wheels on... axles...). Here the elevation of temperature takes place at the same time in the body rubbing and the body rubbed. ...Thus heat is produced by motion. If... [caloric] is matter... matter is created by motion. (2) ...[A]ir compressed by the pumps must rise in temperature above the air outside, and it is expelled at a higher temperature. ...Thus heat has been created by motion.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source
“[T]here cannot be loss of living force, or, which is the same thing, of motive power, if the bodies act upon each other without directly touching each other, without actual collision. ...[T]he molecules of bodies are always separated from each other by some space ...they are never actually in contact. If they touched each other, they would remain united, and consequently change form. If the molecules of bodies are never in close contact with each other, whatever... forces... separate or attract them, there can never be either production or loss of motive power... This power must be as unchangeable in quantity as matter.”
Nicolas Léonard Sadi Carnot (1796–1832) said by 1832 at the latest wikiquote, CC BY-SA 4.0 source