§ 1. Are time and space ultimately real or only phenomenal? § 2. The space and time of _perception_ are limited, sensibly continuous, and consist of a quantitative element together with a _qualitative_ character dependent on relation to the _here_ and _now_ of immediate individual feeling. § 3. _Conceptual_ space and time are created from the perceptual data by a combined process of synthesis, analysis, and abstraction. § 4. They are unlimited, infinitely divisible, and there is valid positive ground for regarding them as mathematically continuous. Thus they form infinite continuous series of positions. They involve abstraction from all reference to the _here_ and _now_ of immediate feeling, and are thus homogeneous, _i.e._ the positions in them are indistinguishable. They are also commonly taken to be unities. § 5. Perceptual space and time cannot be ultimately real, because they involve reference to the _here_ and _now_ of a finite experience; conceptual space and time cannot be ultimately real, because they contain no principle of internal distinction, and are thus not individual. § 6. The attempt to take space and time as real leads to the difficulty about qualities and relations, and so to the indefinite regress. § 7. Space and time contain no principle of unity; there may be many space and time orders in the Absolute which have no spatial or temporal connection with each other. § 8. The antinomies of the infinite divisibility and extent of space and time arise from the indefinite regress involved in the scheme of qualities and relations, and are insoluble so long as the space and time construction is taken for Reality. § 9. The space and time order is an imperfect phenomenal manifestation of the logical relation between the inner purposive lives of finite individuals. Time is an inevitable aspect of finite experience. _How_ space and time are transcended in the Absolute experience we cannot say. § 1. The problems which arise for the metaphysician from the fact that the physical order, as it is presented to our senses, consists of elements having position in space and time, are among the oldest and most perplexing of all the riddles suggested by the course of our experience. Adequate discussion of them would demand not only far more space than we are at liberty to bestow on the topic, but such a familiarity with the mathematical theory of order and series as is scarcely possible to any one but an original mathematician. All that we can do in the present chapter is to deal very superficially with one or two of the leading problems, more with a view to indicating the nature of the questions which Metaphysics has to face, than of providing definite answers to them.