Edwin Muir, An Autobiography (London: Methuen, 1964; 1940), pp. 51-52:
I do not have the power to prove that man is immortal and that the soul exists; but I know that there must be such a proof, and that compared with it every other demonstration is idle. It is true that human life without immortality would be inconceivable to me, though that is not the ground for my belief. It would be inconceivable because if man is an animal by direct descent I can see human life only as a nightmare populated by animals wearing top-hats and kid gloves, painting their lips and touching up their cheeks and talking in heated rooms, rubbing their muzzles together in the moment of lust, going through innumerable clever tricks, learning to make and listen to music, to gaze sentimentally at sunsets, to count, to acquire a sense of humour, to give their lives for some cause, or to pray.