“The only way of avoiding these individual refractions would lie in true cooperation, such that both child and senior would each make allowance for his own individuality and for the realities that were held in common.”
Source: The Moral Judgment of the Child (1932), Ch. 1 : The Rules of the Game, § 8 : Conclusions : Motor Rules and the Two Kinds of Respect
Context: Every observer has noted that the younger the child, the less sense he has of his own ego. From the intellectual point of view, he does not distinguish between external and internal, subjective and objective. From the point of view of action, he yields to every suggestion, and if he does oppose to other people's wills — a certain negativism which has been called "the spirit of contradiction" — this only points to his real defenselessness against his surroundings. A strong personality can maintain itself without the help of this particular weapon. The adult and the older child have complete power over him. They impose their opinions and their wishes, and the child accepts them without knowing that he does so. Only — and this is the other side of the picture — as the child does not dissociate his ego from the environment, whether physical or social, he mixes into all his thoughts and all his actions, ideas and practices that are due to the intervention of his ego and which, just because he fails to recognize them as subjective, exercise a check upon his complete socialization. From the intellectual point of view, he mingles his own fantasies with accepted opinions, whence arise pseudo lies (or sincere lies), syncretism, and all the features of child thought. From the point of view of action, he interprets in his own fashion the examples he has adopted, whence the egocentric form of play we were examining above. The only way of avoiding these individual refractions would lie in true cooperation, such that both child and senior would each make allowance for his own individuality and for the realities that were held in common.
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Jean Piaget 66
Swiss psychologist, biologist, logician, philosopher & acad… 1896–1980Related quotes

Aphorism 42
Novum Organum (1620), Book I
Context: The Idols of the Cave are the idols of the individual man. For everyone (besides the errors common to human nature in general) has a cave or den of his own, which refracts and discolors the light of nature, owing either to his own proper and peculiar nature; or to his education and conversation with others; or to the reading of books, and the authority of those whom he esteems and admires; or to the differences of impressions, accordingly as they take place in a mind preoccupied and predisposed or in a mind indifferent and settled; or the like. So that the spirit of man (according as it is meted out to different individuals) is in fact a thing variable and full of perturbation, and governed as it were by chance. Whence it was well observed by Heraclitus that men look for sciences in their own lesser worlds, and not in the greater or common world.

Source: 1930s, Sex and Temperament in Three Primitive Societies (1935), p. 321
Essays on Liberty (1954), Essays on Liberty https://books.google.com/books?id=SugpAQAAMAAJ&dq=There+is+really+nothing+that+can+be+done+except+by+an+individual.+Only+individuals+can+learn.+Only+individuals+can+think+creatively.+Only+individuals+can+cooperate.+Only+individuals+can+combat+statism.&focus=searchwithinvolume&q=%22There+is+really+nothing+that+can+be+done+except+by+an+individual.+Only+individuals+can+learn.+Only+individuals+can+think+creatively.+Only+individuals+can+cooperate.+Only+individuals+can+combat+statism.%22
Source: The Greening of America (1970), Chapter II : Consciousness I: Loss Of Reality, p. 21 (See also: Hunter S. Thompson)
Context: To the American people of 1789, their nation promised a new way of life: each individual a free man; each having the right to seek his own happiness; a republican form of government in which the people would be sovereign; and no arbitrary power over people's lives. Less than two hundred years later, almost every aspect of the dream has been lost.

pg 21
Equitable Commerce (1848)

1920s, Freedom and its Obligations (1924)

Vol. I, Part 4.
The German Ideology (1845/46)
Context: Communism differs from all previous movements in that it overturns the basis of all earlier relations of production and intercourse, and for the first time consciously treats all natural premises as the creatures of hitherto existing men, strips them of their natural character and subjugates them to the power of the united individuals. Its organisation is, therefore, essentially economic, the material production of the conditions of this unity; it turns existing conditions into conditions of unity. The reality, which communism is creating, is precisely the true basis for rendering it impossible that anything should exist independently of individuals, insofar as reality is only a product of the preceding intercourse of individuals themselves.