Are we happier? As well ask whether the wild wolf or the tame dog is the happier animal. The truth would seem to be that wolf and dog alike can be thoroughly happy each in its own way; whereas each would be as thoroughly miserable, if forced to live the life of the other. In one of his most brilliant passages Andrew Lang, after contrasting the mental condition of one of our most distant ancestors with yours or mine, by no means to our disadvantage, concludes with these words: 'And after all he was probably as happy as we are; it is not saying much.'[5] But, if not happier, are we nobler? If I may venture to speak as a philosopher, I should reply, confidently, 'Yes.' It comes to this, that we have and enjoy more soul. On the intellectual side, we see farther afield. On the moral side, our sympathies are correspondingly wider. Imaginatively, and even to no small extent practically, we are in touch with myriads of men, present and past. We participate in a world-soul; and by so doing are advanced in the scale of spiritual worth and dignity as members of the human race. Yet this common soul of mankind we know largely and even chiefly as something divided against itself. Not only do human ideals contradict each other; but the ideal in any and all of its forms is contradicted by the actual. So it is the discontent of the human world-soul that is mainly borne in upon him who shares in it most fully. A possibility of completed good may glimmer at the far end of the quest; but the quest itself is experienced as a bitter striving. Bitter though it may be, however, it is likewise ennobling. Here, then, I find the philosophic, that is, the ultimate and truest, touchstone of human progress, namely, in the capacity for that ennobling form of experience whereby we become conscious co-workers and co-helpers in an age-long, world-wide striving after the good. But to-day I come before you, not primarily as a philosopher, but rather as an anthropologist, a student of prehistoric man. I must therefore define progress, not in the philosophic or ultimate way, but simply as may serve the strictly limited aims of my special science. As an anthropologist, I want a workable definition--one that will set me working and keep me working on promising lines. I do not ask ultimate truth of my anthropological definition. For my science deals with but a single aspect of reality; and the other aspects of the real must likewise be considered on their merits before a final account can be rendered of it.