“The consciousness of brutes would appear to be related to the mechanism of their body simply as a collateral product of its working, and to be as completely without any power of modifying that working as the steam-whistle which accompanies the work of a locomotive engine is without influence upon its machinery. Their volition, if they have any, is an emotion indicative of physical changes, not a cause of such changes.”

— Thomas Henry Huxley

1870s, On the Hypothesis that Animals are Automata, and Its History (1874)

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Thomas Henry Huxley 127

English biologist and comparative anatomist 1825–1895

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“Consciousness arises with, or out of, and accompanies, these clay compounds called creatures, but it does not cause, nor in any way interfere with, their phenomena. If it were possible to construct artificial clods, chemically as accomplished as philosophers, but without any accompanying consciousness, these soulless mechanisms, without will, feeling, or conscious intelligence, simply acting out their chemical and physical affinities, would not behave otherwise in any infinitesimal particular than the real, conscious meditators on things.”

J. Howard Moore (1862–1916)

Source: Better-World Philosophy: A Sociological Synthesis (1899), The Derivation of the Nature of Living Beings, pp. 200–201

“If the brutes have consciousness and no souls, then it is clear that, in them, consciousness is a direct function of material changes; while, if they possess immaterial subjects of consciousness, or souls, then, as consciousness is brought into existence only as the consequence of molecular motion of the brain, it follows that it is an indirect product of material changes. The soul stands related to the body as the bell of a clock to the works, and consciousness answers to the sound which the bell gives out when it is struck.”

Thomas Henry Huxley (1825–1895) English biologist and comparative anatomist

1870s, On the Hypothesis that Animals are Automata, and Its History (1874)

“It is quite true that, to the best of my judgment, the argumentation which applies to brutes holds equally good of men; and, therefore, that all states of consciousness in us, as in them, are immediately caused by molecular changes of the brain-substance. It seems to me that in men, as in brutes, there is no proof that any state of consciousness is the cause of change in the motion of the matter of the organism. If these positions are well based, it follows that our mental conditions are simply the symbols in consciousness of the changes which takes place automatically in the organism; and that, to take an extreme illustration, the feeling we call volition is not the cause of a voluntary act, but the symbol of that state of the brain which is the immediate cause of that act.”

Thomas Henry Huxley (1825–1895) English biologist and comparative anatomist

1870s, On the Hypothesis that Animals are Automata, and Its History (1874)

“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 elevated, to another in which it is lower.”

Nicolas Léonard Sadi Carnot (1796–1832) French physicist, the "father of thermodynamics" (1796–1832)

p, 125
Reflections on the Motive Power of Heat (1824)

“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… [for which] the phenomenon is… incomplete. It becomes difficult to recognize its principles and study its laws. …[T]he principle of the production of motion by heat… must be considered independently of any mechanism or… particular agent. It is necessary to establish principles applicable not only to steam-engines but to all imaginable heat-engines, whatever the working substance and whatever the method by which it is operated.”

Nicolas Léonard Sadi Carnot (1796–1832) French physicist, the "father of thermodynamics" (1796–1832)

Reflections on the Motive Power of Heat (1824)

“Such being its nature, without any display, it becomes manifested; without any movement, it produces changes; and without any effort, it accomplishes its ends.”

Confucius (-551–-479 BC) Chinese teacher, editor, politician, and philosopher

The Analects, The Doctrine of the Mean
Context: To entire sincerity there belongs ceaselessness. Not ceasing, it continues long. Continuing long, it evidences itself. Evidencing itself, it reaches far. Reaching far, it becomes large and substantial. Large and substantial, it becomes high and brilliant. Large and substantial; this is how it contains all things. High and brilliant; this is how it overspreads all things. Reaching far and continuing long; this is how it perfects all things. So large and substantial, the individual possessing it is the co-equal of Earth. So high and brilliant, it makes him the co-equal of Heaven. So far-reaching and long-continuing, it makes him infinite. Such being its nature, without any display, it becomes manifested; without any movement, it produces changes; and without any effort, it accomplishes its ends.