My approach has never been to start from theories to arrive at facts, but on the contrary, to try to bring out from the facts the explanatory thread without which they appear incomprehensible and elude effective action.
Fascinated by history during my secondary education, then by physics and mechanics at the Ecole Polytechnique, I finally entered the national administration of mines in 1936.
I was born May 31, 1911, in Paris. My parents owned a small cheese shop, and my maternal grandfather was a carpentry worker. I thus came from what is commonly known as the working class.
