194 THE WORLD AS WILL. bk. ii.
without rest and without end. Neither the law of inertia nor that of causality is opposed to this: for as, according to the former, matter as such is alike indifferent to rest and motion, its original condition may just as well be the one as the other, therefore if we first find it in motion, we have just as little right to assume that this was preceded by a condition of rest, and to inquire into the cause of the origin of the motion, as, conversely, if we found it at rest, we would have to assume a previous motion and inquire into the cause of its suspension. It is, therefore, not needful to seek for a first impulse for centrifugal force, for, according to the hypothesis of Kant and Laplace, it is, in the case of the planets, the residue of the original rotation of the central body, from which the planets have separated themselves as it contracted. But to this central body itself motion is essential; it always continues its rotation, and at the same time rushes forward in endless space, or perhaps circulates round a greater central body invisible to us. This view entirely agrees with the conjecture of astronomers that there is a central sun, and also with the observed advance of our whole solar system, and perhaps of the whole stellar system to which our sun belongs. From this we are finally led to assume a general advance of fixed stars, together with the central sun, and this certainly loses all meaning in boundless space (for motion in absolute space cannot be distinguished from rest), and becomes, as is already the case from its striving and aimless flight, an expression of that nothingness, that failure of all aim, which, at the close of this book, we shall be obliged to recognise in the striving of will in all its phenomena. Thus boundless space and endless time must be the most universal and essential forms of the collective phenomena of will, which exist for the expression of its whole being. Lastly, we can recognise that conflict which we are considering of all phenomena of will against each other in simple matter regarded as such; for the real character-
