1884 – Gaston Bachelard was born on the 27th of June.
1930 – Professor at Dijon and then became the inaugural chair in history and philosophy of the sciences
at the Sorbonne.
1934 – Studied the history and philosophy of science in such works as Le nouvel esprit scientifique ("The New Scientific Mind").
1938 – La formation de l’esprit scientifique ("The Formation of the Scientific Mind") were based on his vision of historical epistemology as a kind of psychoanalysis of the scientific mind.
1958 – Wrote The Poetics of Space, one of the most popular of his works. His most important work is in poetics and the philosophy of science.
1962 – Bachelard died on the 16th of October. He was the one who introduced the concepts of epistemological obstacle and epistemological break (obstacle épistémologique et rupture épistémologique). He was able to influenced many French philosophers in the latter part of the twentieth century, among them Michel Foucault and Louis Althusser.