Jean Piaget

Swiss psychologist, biologist, logician, philosopher and academic (1896–1980)

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Switzerland rank#41
Academics rank#225
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Lived 1896–1980, aged 84Switzerland

Switzerland AcademicsAcademic

Wikipedia
93 languages
Cross-language footprint
Rank in Switzerland
#41
Academics
Era
1896–1980
Aged 84
Awards
8
recognised works

Summary

Updated 2026-06-21

He mapped how children actually think — not as mini-adults but as builders of their own logic, stage by stage. That framework reshaped classrooms worldwide and made him the second most-cited psychologist of the 20th century.

Biography

About

Jean Piaget was a Swiss psychologist who spent decades studying how children develop understanding from infancy forward. He called his approach genetic epistemology — tracing the origins of knowledge itself. In 1934, as Director of the International Bureau of Education, he warned that only education could prevent societal collapse. Two decades later, in 1955, he founded the International Center for Genetic Epistemology in Geneva while teaching at the University of Geneva, directing it until his death in 1980. The center's productivity earned it the nickname "Piaget's factory" in academic circl…

Voice

In their own words

Sourced, dated quotes from Jean Piaget

Jean Piaget

said1980

As you know, Bergson pointed out that there is no such thing as disorder but rather two sorts of order, geometric and living. Mine is clearly living.

— Conversations with Jean Piaget (1980) by Jean Claude Bringuier

Jean Piaget

said1980

Education, for most people, means trying to lead the child to resemble the typical adult of his society... But for me, education means making creators...

— Conversations with Jean Piaget (1980) by Jean Claude Bringuier

Jean Piaget

said1971

The essential functions of the mind consist in understanding and in inventing, in other words, in building up structures by structuring reality.

— Piaget (1971, p.27) cited in: Ernst von Glasersfeld "Homage to Jean Piaget (1896–1980)". In: Irish Journal of Psychology, 18, pp. 293–306

Jean Piaget

said1969

I am convinced that there is no sort of boundary between the living and the mental or between the biological and the psychological.

— Interview with Jean Claude Bringuier (1969)

Jean Piaget

said1968

Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality. They are more or less isomorphic to transformations of reality.

— Genetic Epistemology (1968) – First lecture

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