His major work was his book "Scientific Explanation: A Study of the Function of Theory, Probability and Law in Science" (1953) but, like his Eddington Lecture it was his inaugural lecture ("Theory of Games as a Tool for the Moral Philosopher") that was his more original contribution: although a logician and philosopher of science, he had been elected to a chair of moral philosophy (ethics) about which he considered he knew little. His inaugural lecture attempted to bring what he did know about the theory of games into some relation with ethical reasoning and, in doing that, he effectively started a whole new field of study, namely, how game-theoretic considerations are related to ethical ones. After his retirement in 1967 Braithwaite was a visiting professor at the Johns Hopkins University where he lectured on game theory and encouraged one of his students, Alexander Rosenberg, to apply the approach of "Scientific Explanation" to economics.