In reality the experience of humanity shows such a union. Of primary importance in this connection is the fact of the power of so-called "ideas" in history--the fact that certain aims transcending natural welfare win power over the whole domain of culture, bind men together and lift them above their selfish interests. To be sure, in the movements which arise to carry out these ideas much that is insignificantly human is introduced; and the interests of individuals and of classes often largely preponderate, but the origin and the progress of these movements cannot be accounted for by the merely human; they are only to be explained as due to man feeling directly within himself the necessity of spiritual tasks. If he feels this necessity only under particular conditions, and if it is only for a short time that it asserts itself at its highest, still it extends its influence over life as a whole, and is everywhere a unique phenomenon, even when limited and confused by much that is alien to it. Further, the fact that whole peoples have developed distinctive national characters is of importance in this connection. Such a character is distinguished essentially from all mere participation of common conditions, not only physical but also psychical, that social life brings with it. For the development of such a character life must rise to energetic activity and become unified; there must be an advance towards a common goal; an active relation must be taken up not only towards the environment but also towards itself. A national character is not "given," but is attained through the work of history; it develops only through common experiences, sufferings, and triumphs: in its origin and its continuance it involves an elevation above the aims of physical and social preservation, a development of pure inwardness. Finally, no inner relation of humanity proceeds from the physical association of men, from their meeting in a common world. If a vital whole, a common truth, did not exist within us, all our relations would be external: we could not follow common aims in life and endeavour or have common experiences; we could not think and live for one another, or develop spiritual contents in different departments, such as those of law and religion, science and art, and give to them a cognate spiritual character. It is always the presence of a self-conscious reality that binds humanity together inwardly. We can be as certain in our acknowledgment of this presence as we can that our experience shows such an inner unity in important achievements and in the formation of whole departments of work and other complexes.