Jean Piaget

In other words, knowledge of the external world begins with an immediate utilisation of things, whereas knowledge of self is stopped by this purely practical and utilitarian contact.
In other words, knowledge of the external world begins with an immediate utilisation of things, whereas knowledge of self is stopped by this purely practical and utilitarian contact.
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These are some quotes by Swiss author Jean Piaget Psychologist, who lived between August 9, 1896 and September 16, 1980.