Yes, the prudent, the rational, and, some will say, the pious, attitude, is not to seek to penetrate into mysteries that are hidden from our knowledge, not to insist upon shaping a plastic representation of eternal glory, such as that of the _Divina Commedia_. True faith, true Christian piety, we shall be told, consists in resting upon the confidence that God, by the grace of Christ, will, in some way or another, make us live in Him, in His Son; that, as our destiny is in His almighty hands, we should surrender ourselves to Him, in the full assurance that He will do with us what is best for the ultimate end of life, of spirit and of the universe. Such is the teaching that has traversed many centuries, and was notably prominent in the period between Luther and Kant. And nevertheless men have not ceased endeavouring to imagine to themselves what this eternal life may be, nor will they cease their endeavours so long as they are men and not merely thinking machines. There are books of theology--or of what passes for theology--full of disquisitions upon the conditions under which the blessed dead live in paradise, upon their mode of enjoyment, upon the properties of the glorious body, for without some form of body the soul cannot be conceived. And to this same necessity, the real necessity of forming to ourselves a concrete representation of what this other life may be, must in great part be referred the indestructible vitality of doctrines such as those of spiritualism, metempsychosis, the transmigration of souls from star to star, and the like; doctrines which as often as they are pronounced to be defeated and dead, are found to have come to life again, clothed in some more or less new form. And it is merely supine to be content to ignore them and not to seek to discover their permanent and living essence. Man will never willingly abandon his attempt to form a concrete representation of the other life.