  We see in this passage the separation of immediate causes of action, namely pleasure and pain, from the pattern of action serving nature's real end, namely utility. Wright thought utilitarianism needed, as a supplement, a developed philosophy of habit. In a way similar to his explanation of natural selection, he separated (1) the conditions militating toward habit, (2) immediate motives for choosing action, and (3) the larger principle governing selection of  action.[12]