Jean William Fritz Piaget Jackson was born on August 9, 1896 in Neuchâtel, Switzerland
He acquired and learned from his father a critical and analytical mentality as well as a taste for writing and a fascination for living beings.
Piaget studied at the University of Neuchâtel, graduating in Natural Sciences and obtaining a PhD in 1918 with a thesis on malacology.
In 1921 he published a first article on intelligence, which caused him to receive an offer to work as a director of the Rousseau Institute in Geneva.
In 1923 he married Valentine Châteney and had three children. The observation and analysis of the growth and development of their children which would lead to the development of his best known work: the cognitive-evolutionary theory