“Nonetheless it is true that the greater part of our daily lives, and the pursuit of most occupations, give little satisfaction to deep-seated ‘altruistic’ desires to do visible good. Rather, accepted practices often require us to leave undone what our instincts impel us to do. It is not so much, as is often suggested, emotion and reason that conflict, but innate instincts and learnt rules. Yet, as we shall see, following these learnt rules generally does have the effect of providing a greater benefit to the community at large than most direct ‘altruistic’ action that a particular individual might take.”