 Broad made many specific contributions to the subject of moral philosophy that could be mentioned. Here are three of these. (i) There is a fine discussion of psychological egoism (a discussion where he, as he quite correctly says, gives the psychological egoist “the longest possible run for his  money”).[19]  After Butler there is hardly need of further nails in the coffin of that theory. But because of its shrewd and perceptive treatment of human motivation Broad’s essay is nonetheless of remaining interest. (ii) In Five Types Broad tentatively suggests a version of what is currently known as the The Fitting Attitude Analysis of value. He writes with characteristic cautiousness: “I am not sure that ‘X is good’ could not be defined as meaning that X is such that it would be a fitting object of desire to any mind which had an adequate idea of its non-ethical characteristics” (p.  283).[20]  (iii) In an early paper (1916), Broad seems to anticipate ideas gaining currency much later among moral and political philosophers. He suggests that the goodness of a complex state of affairs is not merely a function of the value of its parts. Its goodness is restrained by a condition which says, roughly, that the best possible state of affairs is one where the producers of some good are as nearly as possible identical with the enjoyers of that good. The principle says that the contributors to a cooperative scheme is bound by a duty of fairness. The principle Broad alludes to could be seen as an early version of the Principle of Fairness (later to be found in the work of H. L. A. Hart and John  Rawls).[21]