13. Time never rests. 13. Space never moves. 14. Everything in time has 14. Everything in space has duration. position. 15. Time has no duration, but 15. Space has no motion, but all duration is in time; all motion is in space; time is the persistence of space is the change in what is permanent in position of that which contrast with its restless moves in contrast to its course. imperturbable rest. 16. Motion is only possible in 16. Motion is only possible in time. space. 17. Velocity, the space being 17. Velocity, the time being the same, is in the inverse the same, is in the direct ratio of the time. ratio of the space. 18. Time is not directly 18. Space is measurable directly measurable by means of through itself and itself but only by means of indirectly through motion motion which takes place in which takes place in both both space and time.... time and space.... 19. Time is omnipresent: each 19. Space is eternal: each part of it is everywhere. part of it exists always. 20. In time alone all things 20. In space alone all things are successive. are simultaneous. 21. Time makes possible the 21. Space makes possible the change of accidents. endurance of substance. 22. Each part of time contains 22. No part of space contains all substance. the same substance as another. 23. Time is the _principium 23. Space is the _principium individuationis_. individuationis_. 24. The now is without 24. The point is without duration. extension. 25. Time of itself is empty and 25. Space is of itself empty indeterminate. and indeterminate. 26. Each moment is conditioned 26. The relation of each by the one which precedes boundary in space to every it, and only so far as this other is determined by its one has ceased to exist. relation to any one. (Principle of sufficient (Principle of sufficient reason of being in time.) reason of being in space.) 27. Time makes Arithmetic 27. Space makes Geometry possible. possible. 28. The simple element of 28. The element of Geometry Arithmetic is unity. is the point. --SCHOPENHAUER, A.