“The supporters of the Development Hypothesis… can show that any existing species—animal or vegetable—when placed under conditions different from its previous ones, immediately begins to undergo certain changes fitting it for the new conditions. They can show that in successive generations these changes continue; until, ultimately, the new conditions become the natural ones.”

—  Herbert Spencer

The Development Hypothesis (1852)
Context: The supporters of the Development Hypothesis... can show that any existing species—animal or vegetable—when placed under conditions different from its previous ones, immediately begins to undergo certain changes fitting it for the new conditions. They can show that in successive generations these changes continue; until, ultimately, the new conditions become the natural ones. They can show that in cultivated plants, in domesticated animals, and in the several races of men, such alterations have taken place. They can show that the degrees of difference so produced are often, as in dogs, greater than those on which distinctions of species are in other cases founded.

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English philosopher, biologist, sociologist, and prominent … 1820–1903

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Herbert Spencer photo

“The supporters of the Development Hypothesis… can show that any existing species—animal or vegetable—when placed under conditions different from its previous ones, immediately begins to undergo certain changes fitting it for the new conditions.”

Herbert Spencer (1820–1903) English philosopher, biologist, sociologist, and prominent classical liberal political theorist

They can show that in successive generations these changes continue; until, ultimately, the new conditions become the natural ones. They can show that in cultivated plants, in domesticated animals, and in the several races of men, such alterations have taken place. They can show that the degrees of difference so produced are often, as in dogs, greater than those on which distinctions of species are in other cases founded.
The Development Hypothesis (1852)

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“How is it possible that the poorer classes can remain healthy and have a reasonable expectation of life under such conditions? What can one expect but that they should suffer from continual outbreaks of epidemics and an excessively low expectation of life? The physical condition of the workers shows a progressive deterioration.”

Friedrich Engels (1820–1895) German social scientist, author, political theorist, and philosopher

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“If, however, one factor is too successful, it will continue to be the winning factor regardless of the variation in the other factors over the range of variation in the conditions, and therefore will stifle the development of other advantageous factors until the conditions change sufficiently that it no longer is the winning factor. At this point, the whole population is ill prepared for the change, and may well perish entirely if the winning factor accidentally becomes the matching factor for a disease or a predator.”

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“The study of the conditions for change begins appropriately with an analysis of the conditions for “no change,” that is, for the state of equilibrium.”

Kurt Lewin (1890–1947) German-American psychologist

Source: 1940s, Quasi-Stationary Social Equilibria and the Problem of Permanent Change, 1947, p. 40.

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“I think art certainly is the vehicle for us to develop any new ideas, to be creative, to extend our imagination, to change the current conditions.”

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Source: Against a Scientific Justification of Animal Experiments, pp. 343-344

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“So far are they from displaying any overweening love of freedom that they show a singular contentment with a condition of servitorship, often showing a curious canine pride in it, and again often simply unaware that they are existing in that condition.”

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Source: Memoirs of a Superfluous Man (1943), p. 314
Context: According to my observations, mankind are among the most easily tamable and domesticable of all creatures in the animal world. They are readily reducible to submission, so readily conditionable (to coin a word) as to exhibit an almost incredibly enduring patience under restraint and oppression of the most flagrant character. So far are they from displaying any overweening love of freedom that they show a singular contentment with a condition of servitorship, often showing a curious canine pride in it, and again often simply unaware that they are existing in that condition.

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Émile Durkheim photo

“Once the generality of the phenomenon has been established, one can, by showing its utility, confirm the results of the first method. We may, therefore, formulate the three following rules:
# A social fact is normal, in relation to a given social type at a given phase of its development, when it is present in the average society of that species at the corresponding phase of its evolution.
# One can verify the results of the preceding method by showing that the generality of the phenomenon is bound up with the general conditions of collective life of the social type considered.
# This verification is necessary when the fact in question occurs in a social species which has not yet reached the full course of its evolution.”

Émile Durkheim (1858–1917) French sociologist (1858-1917)

Source: Rules of Sociological Method, 1895, p. 64

Norman Mailer photo

“One's condition on marijuana is always existential. One can feel the importance of each moment and how it is changing one.”

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