1896 – Born on August 9th in Neuchâtel, Switzerland. Jean Piaget was a Swiss biologist, philosopher, and psychologist best known for his work in the area of developmental psychology.
1906 – His interest in mollusks developed to such a degree that he wrote to the curator of a local museum to request access to its collections after hours. Permission was granted and he became a regular visitor and friends with the curator. He eventually took a part time job at the museum.
– At age ten he wrote his first scientific paper, purportedly to get the librarian to understand that he was not merely a "child".
1918 – As a young man he attended the University of Neuchâtel where he received a degree in zoology.
1923 – Author of the book Le Langage et la Pensée Chez l’Enfant and Le Jugement et la Raisonnement Chez l’Enfant.
1926 – He was a professor of Philosophy in University of Neuchâtel.
– The author of numerous books and scientific papers, he is especially remembered for The Child’s Conception of the World, The Origin of Intelligence in Children, and The Early Growth of Logic in the Child.
1929 – He taught at University of Geneva.
1948 – Wrote La Naissance de l’Intelligence Chez l’Enfant.
1980 – Died on September 17th in Geneva, Switzerland. At the time of his death, at the age of 84, Piaget’s career had spanned some 70+ years and given birth to whole new fields in science.