Our generation looks out upon these backward branches of the race, not only with a finer sentiment and a stricter regard for principle than any previous generation did, but with a very much clearer knowledge of their meaning. We may, of course, be faithless to our principles in cases: we may casuistically wrap a piece of frank buccaneering of the old type in hypocritical humanitarian phrases. The general attitude is, however, more enlightened, as these pieces of hypocrisy themselves show. We may or may not hold the doctrine of universal brotherhood; at least we understand the true relation of these more backward races to ourselves, and we are in a much better position to determine our right and our duties. We have advanced considerably since, little more than half a century ago, a stern moralist like Carlyle could defend black-slavery and denounce as "a gospel of dirt" the scientific revelation which threw light and hope on inferior types of manhood. The chief difference is that we now see the true relation of the lower races to the higher. It is false to say, as Carlyle did, that some races were created with higher gifts than others, and were therefore divinely appointed as the master-races. The notion is as absurd as the old and profitable legend of the laying of a primitive curse on Ham and his black descendants. Difference of geographical conditions is the chief clue to the unequal development of the various branches of the race. I have in various works developed this theme and will not linger over it here. You have at the start the same human material and capacities in all the scattered groups. But some have been for ages isolated from the stimulating contact of races with a different or a higher culture, and this is the essential condition of advance. Others have, by sheer chance, been so situated that they enjoyed this stimulation in an extraordinary degree. On this principle we can understand the birth of civilisation in that fermenting mass of peoples which settled between the Mediterranean and the Persian Gulf ages ago, and the direction of the advancing stream of culture, partly eastward to India and China, but mainly in the more favourable north-western direction.