We are sometimes inclined to think, with a natural regret, that the conditions of life in the eternal world are so utterly unlike those of the world which we know, that we must either leave our mental picture of that life in the barest outline, or fill it in with the colours which we know on earth, but which, as we are well aware, cannot portray truly the life of blessed spirits. To some extent this is true; and whereas a bare and colourless sketch of the richest of all facts is as far from the truth as possible, we may allow ourselves to fill in the picture as best we can, if we remember the risks which we run in doing so. There are, it seems to me, two chief risks in allowing our imagination to create images of the bliss of heaven. One is that the eternal world, thus drawn and painted with the forms and colours of earth, takes substance in our minds as a second physical world, either supposed to exist somewhere in space, or expected to come into existence somewhen in time. This is the heaven of popular religion; and being a geographical or historical expression, it is open to attacks which cannot be met. Hence in the minds of many persons the whole fact of human immortality seems to belong to dreamland. The other danger is that, since a geographical and historical heaven is found to have no actuality, the hope of eternal life, with all that the spiritual world contains, should be relegated to the sphere of the 'ideal.' This seems to be the position of Hoeffding, and is quite clearly the view of thinkers like Santayana. They accept the dualism of value and existence, and place the highest hopes of humanity in a world which has value only and no existence. This seems to me to be offering mankind a stone for bread. Martineau's protest against this philosophy is surely justified: 'Amid all the sickly talk about "ideals," it is well to remember that as long as they are a mere self-painting of the yearning spirit, they have no more solidity than floating air-bubbles, gay in the sunshine and broken by the passing wind. You do not so much as touch the threshold of religion, so long as you are detained by the phantoms of your thought; the very gate of entrance to religion, the moment of its new birth, is the discovery that your gleaming ideal is the everlasting real.'[94]