The deepest currents of passion seldom break the surface of literature. Romantic classics abound; but however skilled a writer may be in verbalising an emotional experience, he cannot publicly evoke the heat of blood, the yearning of soul, bared in perfect intimacy between two beings. But letters can do this, and songs never meant to be sung by any but the lover, or the beloved. Greatest amongst these is the Song of Songs, set to no known music, and for no religious reason incorporated into the Old Testament. Historically, this Song of Solomon is thought to be an ancient wedding idyll, transmitted to us in a rather fragmentary form.