They say at other times that the future and the past are as a panorama upon two rollers; that which is on the roller of the future unwraps itself on to the roller of the past; we cannot hasten it, and we may not stay it; we must see all that is unfolded to us whether it be good or ill; and what we have seen once we may see again no more.  It is ever unwinding and being wound; we catch it in transition for a moment, and call it present; our flustered senses gather what impression they can, and we guess at what is coming by the tenor of that which we have seen.  The same hand has painted the whole picture, and the incidents vary little—­rivers, woods, plains, mountains, towns and peoples, love, sorrow, and death:  yet the interest never flags, and we look hopefully for some good fortune, or fearfully lest our own faces be shown us as figuring in something terrible.  When the scene is past we think we know it, though there is so much to see, and so little time to see it, that our conceit of knowledge as regards the past is for the most part poorly founded; neither do we care about it greatly, save in so far as it may affect the future, wherein our interest mainly lies.

The Erewhonians say it was by chance only that the earth and stars and all the heavenly worlds began to roll from east to west, and not from west to east, and in like manner they say it is by chance that man is drawn through life with his face to the past instead of to the future.  For the future is there as much as the past, only that we may not see it.  Is it not in the loins of the past, and must not the past alter before the future can do so?

Sometimes, again, they say that there was a race of men tried upon the earth once, who knew the future better than the past, but that they died in a twelvemonth from the misery which their knowledge caused them; and if any were to be born too prescient now, he would be culled out by natural selection, before he had time to transmit so peace-destroying a faculty to his descendants.

Strange fate for man!  He must perish if he get that, which he must perish if he strive not after.  If he strive not after it he is no better than the brutes, if he get it he is more miserable than the devils.

Having waded through many chapters like the above, I came at last to the unborn themselves, and found that they were held to be souls pure and simple, having no actual bodies, but living in a sort of gaseous yet more or less anthropomorphic existence, like that of a ghost; they have thus neither flesh nor blood nor warmth.  Nevertheless they are supposed to have local habitations and cities wherein they dwell, though these are as unsubstantial as their inhabitants; they are even thought to eat and drink some thin ambrosial sustenance, and generally to be capable of doing whatever mankind can do, only after a visionary ghostly fashion as in a dream.  On the other hand, as long as they remain where they are they never die—­the only form of death in the unborn world being the leaving it for our own.  They are believed to be extremely numerous, far more so than mankind.  They arrive from unknown planets, full grown, in large batches at a time; but they can only leave the unborn world by taking the steps necessary for their arrival here—­which is, in fact, by suicide.