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Encyclopedia Britannica - Main :: SOU-STE |
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SPACE AND TIME , in philosophy. The metaphysical problems connected with Space and Time are so similar and have been so closely conjoined in the history of thought that they may well be treated together. They are clearly distinguishable from the psychological, which relate to the modes whereby our spatial and temporal conceptions have been formed and to the analysis of the materials of which they are composed (see PSYCHOLOGY). In an exhaustive treatment of Space and Time by far the largest share of the work
The first tendency of thought is to treat Space and Time as having objective existence in the same way as the ordinary things that compose our world, and this we may call
change . Now, if mathematical time as thus described is merely an abstraction used to facilitate mathematical calculations, no objection can be taken to it. But if Newton meant to assert that Time is a flowing stream no less actual than the Thames, his assertion is open to fatal objections. All admittedly real streams, such as the Thames, have a definite beginning and an ending. But where is the source of Time and where is its outlet? Every real stream has boundaries at its sides. What are the boundaries of Time? Every real stream has certain definite qualities: water is rather heavy and translucent, and produces certain effects upon bodies plunged into it. What are the specific qualities of Time? How are things in time affected by their immersion in time so as to be different from things not in time? And if it be asserted that time has such specific qualities, by what senses do we perceive them? We may fairly assume that none of these questions can be answered intelligibly by one who holds the Newtonian position. And thus we are justified in the conclusion that time is not a realstream at all, but something which is said to behave like a stream only in some metaphorical sense. Similar difficulties arise if we try to attribute a like objective reality to Space. We can imagine no boundaries to Space; it seems to have no active specific qualities and we have no sense-organ for perceiving it. The thinkers of antiquity saw these difficulties without solving them. Their whole treatment of philosophic problems was objective; and, so long as Space and Time are treated objectively, not much can be done with them. Plato has great
body
change , and it was just their liability to change that made ordinary mundane things unreal, as contrasted with the unchanging steadfastness of the Platonic Ideas. And the pantheistic One-and-All of Plotinus is plainly incompatible with the reality of Time. In all pantheistic systems Time belongs to mundane existence and Eternity to the transcendent Reality.Modern philosophy is distinguished from ancient mainly by its greater subjectivity; and thus it was not long after the rise of modern philosophy that thinkers began to turn to the subjective method of explaining Space and Time, that is, to regard them as real only to our minds. Its use begins effectively with Berkeley, though prepared for to some extent by earlier writers such as Hobbes. Berkeley's treatment is most definitely clear in the case of Space; for his attack upon materialism made it necessary for him to affirm the ideality of Space as well as of Matter. But he takes a similar line of argument with Time, declaring it to be nothing but the succession of idea's. The merit of the subjective method was that it made men see the importance of psychology. If Space and Time exist only in the human mind we must analyse the human mind to explain them. The work
A distinct epoch in the history of the subject was made by the work of Kant, whose solution of the problems may be classed as transcendental. He argued that Space and Time are not given by experience, but are rather conditions of all our experience, being in his terminology a priori, that is, supplied by the mind from its own inward resources. They do not belong to thingsin-themselves, but to things-as-we-know-them, or phenomena. Their validity consists in the fact that all men have them and that they are absolutely necessary conditions of human intelligence. As he expresses it from his peculiar point of view, Space is the form of outer sense, Time of inner sense. The prevalence of German philosophy in Great
taste , would have the same space-conception as the rest of us; a conclusion too plainly absurd to need refutation. What an apriorist can still maintain is that in our conception of Space and Time there are elements which cannot be explained by the psychologist as having developed out of anything else, and must therefore be regarded as innate endowments of the mind. This is a position not unreasonable in itself, and one, at least, which does not interfere with the detailed work of the psychologist.The way with these problems which commends itself to thepresent writer and seems fully in harmony with the general tone of contemporary thinking may, if a distinctive catchword be desired, be termed the humanist method. By this is meant that the study of the human mind comes first; that we put no metaphysical questions till we have learnt what the psychologist has to teach us; and that in our explanations of meta-physical realities we should be as anthropomorphic as possible. In the case of Space this leads to a result which is largely negative. When we ask what objective reality corresponds to our conception of Space, the answer must be analogous to that which we give respecting the various sensible qualities of the external world. We cannot suppose that Colour, for example, exists objectively as we experience it; evidently it is altogether relative to the organs of vision which we happen to possess. But we must believe that the objective world has a quality in some way correspondent to the quality of Colour. So with Space. Space as we know it is altogether relative to our tactual, muscular and visual powers of perception. But the fact that our spatial perceptions and conceptions enable us to deal successfully with objects requires us to believe that the objective world has an arrangement of its own corresponding in some way to spatial arrangement, though we are unable to imagine what it can be. Space cannot be objectively real, because of the difficulties disclosed above in the criticism of the " objective " method, and we are unable to put anything definite in its place. With Time the case is somewhat different. Our conception of Time is based on our experience of Change, combined with memory and anticipation. Now Change is an experience which we feel directly in our personal consciousness: consciousness is not spatial, but it is mutable. This direct experience is a guarantee of the realness of Change, and justifies us in attributing it in some degree to ultimate objective reality. See S. H. Hodgson, Space and Time; H. Bergson, Essai sur les donnees immediates de la conscience; J. E. MacTaggart, Studies in the Hegelian Dialectic. (H. ST.) End of Article: SPACE AND TIME If you wish, you can link directly to this article.
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