But melody is more than a mere alternation of tone. It is also a kind of language, by means of which the soul’s deepest emotions seek expression. While it does suggest up-and-down motion in space, at the same time it stands for the audible expression of our mental life. It would be misleading to attempt to explain this illusion from simple analogies between speech and music, since it is itself primarily a mode of expression, and we involuntarily make known our feelings and desires by means of it; by such association of tone with voice the former comes to point for us to life and its manifestations. There are, however, many points of resemblance between melody and the verbal expression of feeling. Dubos has devoted some attention to this relation, and, among contemporary writers, Spencer has most clearly set forth the analogy. But he makes the mistake of applying it to the origin of music, rather than as an explanation of our enjoyment of it, and is decidedly at fault in the statement that music originated in passionate and excited speech.[61] It can attain reflection only by means of the changing time and stress of melodic and rhythmic movement, as well as the appropriation of the numerous sounds and intervals which are hidden in feeling speech, and which take effect on the listener. Yet even this statement must not be interpreted too literally. Just as scenery often owes its impressiveness to vague suggestions of human interest, just as thunder sounds like an angry voice without being an exact copy of it, so the analogy between music and speech may be very real without their becoming identical at any point. The song of birds will perhaps best illustrate my meaning. Why does the nightingale’s note seem plaintive and that of other birds cheerful or bold? Certainly not because we know the bird’s feelings, but because there is an indefinable likeness between our own vocal expression of emotion and the bird’s song, which, in spite of its vagueness, calls forth in us the most direct response. And it is exactly so in the other case. We can not expect to change an emotional declamation into the same kind of melody simply by fixing the pitch and regulating the intervals, for melody has its own laws, to which speech is not amenable. We see, then, that though the analogy is a real one and a constant, it must not be carried too far. How far variation of stress is concerned with emotional expression is interestingly shown in Wundt’s attempt to classify temperament on this basis: ———-—+—-——————-—-—-—+—-—-—-————— │ Strong. │ Weak. ———-—+—-——————-—-—-—+—-—-—-————— Fast │ Choleric. │ Sanguine. Slow │ Melancholic. │ Phlegmatic. ———-—+—-—-—-——————-—+—-—-—-—————