"The jealous man is not able, nor does he have the will, to imagine the opposite of what he fears, indeed he cannot feel joy except in the magnification of his own sorrow, and by suffering through the magnified enjoyment from which he knows he is banned. The pleasures of love are pains that become desirable, where sweetness and torment blend, and so love is voluntary insanity, infernal paradise, and celestial hell -- in short, harmony of opposite yearnings, sorrowful laughter, soft diamond."