Time then is not to be divided into centuries and hours and minutes: but just as each atom figures a world in itself, so each moment is an eternity, one link in an endless chain which binds the remotest past to the remotest future. Time's mirror may look with changeless face upon the tens of thousands of events which defile before it and pass away leaving no mark;--but that is not to say that these events are without issue, since their consequences ripple out into space for ever and ever. What has happened never wholly ceases to happen. To mankind a sentiment of it may return in many forms--in a snatch of music, in a perfume, in some subtle vibration or illumination of the atmosphere--and these returns are authentic parcels of the original moment, for time is to be divorced neither from material nor immaterial things. This Present, which to us will so soon be Past, keeps, as it flies, something of its true essence, and will revive its influence a year, a century, thousands of centuries later, in some scent or sound, or unforeseen collocation of circumstance. This continuing process gives us our only approach to the conception of eternity, for there could be no endless time if the hours lived only once and for all, and then died irremediably. Seconds which have their passage grow enriched in its course and cease, only to revive in a new form, after the same fashion as ourselves who, when death has resolved us, will live again in other combinations of our elements, no particle of which can be lost in space or time. Each second comprehends eternity, as each atom the infinite, and the course of all that is in the universe is rotary, an orbit constant as those of stars or of electrons. Everything wheels about space in circles; and probably movement in time is also circular: so that when we find ourselves strangely imagining things which have been, or things which may sometime be, we can explain ourselves to ourselves with the reflection that our momentary path has doubtless that second crossed the emanations of some instant fully lived by another, long ago.