Leonard Jimmie Savage, 1917-1971, was an American mathematician specialised in statistics, and was a Professor at the University of Michigan and Yale University. He also worked in some statistics research institutes at different American universities.

In Savage’s most famous work “Foundations of Statistics” 1954, he introduces several elements on *game theory* and he elaborates the theory of subjective expected utility, which confronts the relation between the *probability* for an event and the *utility* of the event for a certain subject. To this effect, he formulated an axiom that follows coherent behaviours, such as probability and utility consistent with the principle of *utility maximisation*. Through his work, Savage established the bases for *Bayesian statistics* and its application to game theory, as well as a criterion used in decision theory known as *minimax regret*.