2 This introspectual quality of the “a priori synthesis of the most perfect sort” is found, for example, in the assumptions upon which is based the bulk of opinion in matters of Church and State, the family, justice, probity, honour, purity, crime, and so forth. Yet clearly we cannot say that there is a specific instinct concerned with each of these subjects, for that, to say the least, would be to postulate an unimaginable multiplicity of instincts, for the most part wholly without any conceivable biological usefulness. For example, there are considerable difficulties in imagining an instinct for making people Wesleyans or Roman Catholics, or an instinct for making people regard British family life as the highest product of civilization, yet there can be no question that these positions are based upon assumptions having all the characters described by James as belonging to the impulses of instinct.