This is all that can be said either for or against the exclusive accentuation of any one single social force. All the endeavours to create a realm of unlimited and absolute freedom have only as much value as the assumption, in physics, of space absolutely void of air, or of a direction of motion absolutely uninfluenced by the force of gravity. The force which sets a bullet in motion is certainly something actual and real; but the influence which would correspond to this force, this direction in the sense in which the physicist distinguishes it, exists only in theory, because the bullet will, as far as all actual experience goes, only move in the direction of a resultant, in which the impetus given to it and the force of gravity are inseparably united and appear as one. If, therefore, it is also clear that the endeavour to obtain a realm of unconditional freedom contradicts _ipso facto_ the conception of life, yet all such endeavours are by no means valueless for our knowledge of human society, and consequently for society itself; and even if social life is always only the resultant of different forces, yet these forces themselves remain something real and actual, and are no mere fiction or hypothesis; while the growing differentiation of society shows how freedom, conceived as a force, is something actual, although as an ideal it may never attain full realisation. The development of society has proceeded hand in hand with a conscious or more often unconscious assertion of the individual, and the philosopher Hegel could rightly say that the history of the world is progress in the consciousness of freedom. At all events, it might be added, the statement that the history of the world is progress in the consciousness of the universal interdependence of mankind would have quite as much justification, and practically also just the same meaning. The circumstance that, apart from the events of what is comparatively a modern period, the great social upheavals of history have not taken place expressly in the name of freedom, although they have indisputably implied it, only proves that in this case we have to deal not with a mere word or idea, but with an actual force which is active and acting, without reference to our knowledge or consciousness of it. The recognition of individual freedom, and much more the endeavour to make it the only object of our life, are certainly of quite recent date. But these presuppose a certain amount of progress in the actual process of setting the individual free in his moral and political relationships, which is not to be found in the whole of antiquity, and still less in the middle ages. * * * * *