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: The motor rule. In its beginnings the motor rule merges into habit. During the first few months of an infant's life, its manner of taking the breast, of laying its head on the pillow, etc., becomes crystallized into imperative habits. This is why education must begin in the cradle. To accustom the infant to get out of its own difficulties or to calm it by rocking it may be to lay the foundations of a good or of a bad disposition.
But not every habit will give rise to the knowledge of a rule. The habit must first be frustrated, and the ensuing conflict must lead to an active search for the habitual. Above all, the particular succession must be perceived as regular, i. e. there must be judgment or consciousness of regularity (Regelbewusstseiri). The motor rule is therefore the result of a feeling of repetition which arises out of the ritualization of schemas of motor adaptation. <!-- The primitive rules of the game of marbles (throwing the marbles, heaping them, burying them, etc.) which we observed towards the age of 2-3 are nothing else. The behavior in question starts from a desire for a form of exercise which takes account of the particular object that is being handled. The child begins by incorporating the marbles into one or other of the schemas of assimilation already known to him, such as making a nest, hiding under earth, etc. Then he adapts these schemas to the nature of the object by preventing the marbles from rolling away by putting them in a hole, by throwing them, etc.
                                    
“Before games are played in common, no rules in the proper sense can come into existence. Regularities and ritualized schemas are already there, but these rites, being the work of the individual, cannot call forth that submission to something superior to the self which characterizes the appearance of any rule.”
Source: The Moral Judgment of the Child (1932), Ch. 1 : The Rules of the Game
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Jean Piaget 66
Swiss psychologist, biologist, logician, philosopher & acad… 1896–1980Related quotes
Source: Outsiders: Studies in the Sociology of Deviance (1963), p. 162.
                                        
                                        Even if we knew every rule, however, we might not be able to understand why a particular move is made in the game, merely because it is too complicated and our minds are limited. If you play chess you must know that it is easy to learn all the rules, and yet it is often very hard to select the best move or to understand why a player moves as he does. So it is in nature, only much more so. 
volume I; lecture 2, "Basic Physics"; section 2-1, "Introduction"; p. 2-1 
The Feynman Lectures on Physics (1964)
                                    
An Examination of the Leading Principles of the Federal Constitution (1787).
Essay of Dramatick Poesie (1668) Full text online http://andromeda.rutgers.edu/~jlynch/Texts/drampoet.html.
                                        
                                        Source: The Moral Judgment of the Child (1932), Ch. 1 : The Rules of the Game 
Context: Genetically speaking, the explanation both of rites and of symbols would seem to lie in the conditions of preverbal motor intelligence. When it is presented with any new thing, a baby of 5 to 8 months will respond with a dual reaction; it will accommodate itself to the new object and it will assimilate the object to earlier motor schemas. Give the baby a marble, and it will explore its surface and consistency, but will at the same time use it as something to grasp, to suck, to rub against the sides of its cradle, and so on. This assimilation of every fresh object to already existing motor schemas may be conceived of as the starting point of ritual acts and symbols, at any rate from the moment that assimilation becomes stronger than actual accommodation itself.
                                    
                                        
                                        volume I; lecture 2, "Basic Physics"; section 2-1, "Introduction"; p. 2-1 
The Feynman Lectures on Physics (1964)
                                    
“Life is a game, boy. Life is a game that one plays according to the rules.”
                                        
                                        Mr. Spencer 
Source: The Catcher in the Rye (1951), Chapter 2