'It is part of the nature of a strong erotic passion - as distinct from a transient fit of appetite - that it makes more towering promises than any other emotion. No doubt all our desires make promises, but not so impressively. To be in love involves the almost irresistable conviction that one will go on being in love until one dies, and that possession of the beloved will confer, not merely frequent ecstacies, but settled, fruitful, deep-rooted, life-long happiness. Hence all seems to be at stake. If we miss this chance we shall have lived in vain. At the very thought of such doom we sink into fathomless depths of self-pity.'
CS Lewis, "We have no 'right to happiness'" in God in the Dock, p.106.
