Thus constituted, morality can fully acknowledge the various moral impulses at work in the present day; it can, at the same time, oppose their disintegration, and help them as far as possible to promote each others best interests. We have seen how, in our day, invisible and visible impulses are in operation, which easily come into mutual opposition. The morality of the spiritual life can in such cases acknowledge both aspects, even if it cannot value them equally. For this morality must take up a position in an invisible world, since the progression from a visible to an invisible world goes through the whole of the spiritual life. At the same time work in the visible world is most important for man, if not indispensable. He is driven to it not only by the necessity of natural self-preservation, but also by the real interests of the invisible world. He does not find this invisible world ready for him, or waiting to develop steadily from within, but he must acquire and strengthen it by battling against the visible world and its resistance. The spiritual movement is sure to become subjective and uncertain, as soon as it severs all connection with the visible world, in relation to which our work gains strength and confidence. Love, strength, and continuity are thus acquired, which must then be transformed into activity for our fellow-men. This applies both to individuals and to all mankind. Such valuation of activity for the visible world does not mean that we constitute life out of the visible and the invisible as out of two factors of equal value, for wherever spiritual life develops, the invisible is of paramount importance, and everything else must be brought into relation with it. The visible is valuable only as a means for the development or manifestation of the invisible. But as such, it is of considerable value. Thus the morality of the spiritual life is quite able to recognise--and to benefit by--the great civilising work of the modern age and its untiring social activity, even while insisting on their assimilation by a vaster cohesion which is to vitalise them.