In 1949, he received the title of doctor-engineer from the University of Paris, Faculty of Science.
He also held teaching positions at various institutions, including at the University of Paris X-Nanterre.
His first works oriented him towards the sciences of the concrete and the experiments of fundamental physics, on which he will also publish numerous works, notably on pendular oscillations and the laws of gravitation.
It's after a trip in 1933 to the United States during the Great Depression, that he decides to make the economy.
Allais died at his home in Saint-Cloud, near Paris, at the age of 99.Allais considered Leon Walras, Wilfredo Pareto, and Irving Fisher to be his primary influences.
He was reluctant to write in or translate his work into English, and many of his major contributions became known to the dominant community only when they were independently rediscovered or popularized by English-speaking economists.
At the same time, he claimed Keynes's liberalism and declared himself in favor of an important public sector.
Allais attended the inaugural meeting of the Mont Pelerin Society, but he was alone among the attendees to refuse to sign the statement of aims because of a disagreement over the extent of property rights.