Space and extension are not identical. Extension is simply an attribute of body--the continuity of matter. Space is place, distance, direction, relations of bodies. _Space is a certain correlation of finite existences._ Immensity is the attribute of the unconditioned Being, the absolute Spirit--that is, God. He is incorporeal, boundless, spaceless, infinite. 2. The same confusion pervades the writings of philosophers in regard to TIME, DURATION, _and_ ETERNITY. Succession is confounded with duration,[91] duration with time,[92] and time with eternity.[93] If succession and duration are identical, then, there is no permanent substance underlying the fugitive phenomena of the outer world, and no personal existence which remains the same through all the changes of our mental states. The human mind is simply "a series of feelings," a succession of mental states without any enduring ground principle constituting our personal identity, and we are thus landed in the constructive Idealism of John Stuart Mill.[94] On the other hand, if there be a permanent substance or essence underlying all mental phenomena, whose continuance in existence is measured by phenomenal change, time succession, then duration can not be identical with time, any more than permanence can be the same as change. With finite duration there is necessarily given change; the past is like the future--always a minus in relation to the present. Furthermore, if time is synonymous with eternity, then eternity is divisible, measurable, it has limits and parts. Time, say the philosophers, has one dimension, while space has three. "We," says McCosh, "represent time as a line,"[95] it must therefore be divisible, and, if divisible, it is legitimate to speak, with Hamilton, of "time and its parts." "Time has succession, or priority and posteriority."[96] And yet this same writer in the same work tells us, "Time has no limits," and "Time can not be divided into separable parts."[97] If time and eternity are identical, eternity has a past, a present, and a future--"eternity _ab ante_ and eternity _a post_."[98] The eternity past is bounded by the present, it _ends_ now; the eternity to come _begins_ now. We may with propriety ask, How can that which has succession, which is capable of exact measurement, which has a beginning and an end, be infinite? That which had a beginning can not be unbeginning, that which will come to an end can not be endless. Is not the "eternity of _time_" a contradiction in terms? Is not "absolute time" an absurdity? Mark, then, the contradictions which flow from the confounding of succession and duration, time and eternity. Time has limits, time has no limits. Time is divisible, time is indivisible. Time is finite, time is infinite. Time is relative, time is absolute. Time is moving, "it flows;" time is immovable, "it does not flow."[99]