"Should the nebular hypothesis ever be established, then it will become manifest that the universe at large, like every organism, was once homogeneous; that as a whole, and in every detail, it has unceasingly advanced toward greater heterogeneity; and that its heterogeneity is still increasing. It will be seen that as in each event of to-day, so from the beginning, the decomposition of every expended force into several forces has been perpetually producing a higher complication; that the increase in heterogeneity so brought about is still going on, and must continue to go on: and that this progress is not an accident, not a thing within human control, but a beneficent necessity."