In fact we cannot go back appreciably before the dawn of political history, but there are certain considerations which enable us at least to understand the phenomena of the dawn itself, those survivals in culture which loom up in the twilight and the understanding of which gives us a fair start in our historical development. For this knowledge we are indebted to the so-called “anthropological” method, which is based on the assumption that mankind is essentially uniform, and that this essential uniformity justifies us in drawing inferences about very ancient thought from the very primitive thought of the barbarous and savage peoples of our own day. At first sight the weakness of this contention is more apparent than its strength, and it is easy to show that the prehistoric primitive culture of a people destined to civilisation is one thing, and the retarded primitive culture of modern tribes stunted in their growth is quite another thing, so that, as has so often been said, the two bear a relation to each other not unlike that of a healthy young child to a full-grown idiot. And yet there is a decided resemblance between the child and the idiot, and whether prehistoric or retarded, primitive culture shows everywhere strong likeness, and the method is productive of good if we confine our reasoning backwards to those things in savage life which the two kinds of primitive culture, the prehistoric and the retarded, have in common. To do this however we must have some knowledge of the prehistoric, and our modern retarded savage must be used merely to illumine certain things which we see only in half-light; he must never be employed as a lay-figure in sketching