On the other hand, we must reject root and branch the crude idea, which has a certain popular currency, that the development of civilisation and of nations implies a parallel evolution of individual minds. That idea we have already touched upon and rejected in a previous chapter, where we arrived at the conclusion that there is no reason to suppose the present civilised peoples to be on the whole innately superior to their barbaric ancestors. If we use the word ‘tradition’ in the widest possible sense to denote all the intellectual and moral gains of past generations, in so far as they are not innate but are handed on from one generation to another by the personal intercourse of the younger with the older generation, and if we allow the notion of tradition to include all the institutions and customs that are passed on from generation to generation, then we may class all the changes of a people that constitute the evolution of a national character under the two heads: _evolution of innate qualities_ and _evolution of traditions_. Using the word ‘tradition’ in the wide sense just now indicated, the traditions of a people may be said to include the recognised social organisation of the whole people into classes, castes, clans, phratries, or groups of any kind, whose relations to one another and whose place in the national system are determined by law, custom and conventions of various kinds. This part of the total tradition is relatively independent of the rest, and we may usefully distinguish the development of such social organisation as social evolution—giving to the term this restricted and definite meaning—and we may set it alongside the other two conceptions as of co-ordinate value.