feeble of perseverance in them, sullied or shameful in the indulgence of them, their expression by musical sound becomes broken, mean, fatuitous, and at last impossible; the measured waves of the air of heaven will not lend themselves to expression of ultimate vice, it must be forever sunk into discordance or silence.  And since, as before stated, every work of right art has a tendency to reproduce the ethical state which first developed it, this, which of all the arts is most directly in power of discipline; the first, the simplest, the most effective of all instruments of moral instruction; while in the failure and betrayal of its functions, it becomes the subtlest aid of moral degradation.  Music is thus, in her health, the teacher of perfect order, and is the voice of the obedience of angels, and the companion of the course of the spheres of heaven; and in her depravity she is also the teacher of perfect disorder and disobedience, and the Gloria in Excelsis becomes the Marseillaise.  In the third section of this volume, I reprint two chapters from another essay of mine ("The Cestus of Aglaia"), on modesty or measure, and on liberty, containing further reference to music in her two powers; and I do this now, because, among the many monstrous and misbegotten fantasies which are the spawn of modern license, perhaps the most impishly opposite to the truth is the conception of music which has rendered possible the writing, by educated persons, and, more strangely yet, the tolerant criticism, of such words as these:  “This so persuasive art is the only one that has no didactic efficacy, that engenders no emotions save such as are without issue on the side of moral truth, that expresses nothing of God, nothing of reason, nothing of human liberty.”  I will not give the author’s name; the passage is quoted in the “Westminster Review” for last January [1869].

43.  I must also anticipate something of what I have to say respecting the relation of the power of Athena to organic life, so far as to note that her name, Pallas, probably refers to the quivering or vibration of the air; and to its power, whether as vital force, or communicated wave, over every kind of matter, in giving it vibratory movement; first, and most intense, in the voice and throat of the bird, which is the air incarnate; and so descending through the various orders of animal life to the vibrating and semi-voluntary murmur of the insect; and, lower still, to the hiss or quiver of the tail of the half-lunged snake and deaf adder; all these, nevertheless, being wholly under the rule of Athena as representing either breath or vital nervous power; and, therefore, also, in their simplicity, the “oaten pipe and pastoral song,” which belong to her dominion over the asphodel meadows, and breathe on their banks of violets.

Finally, is it not strange to think of the influence of this one power of Pallas in vibration (we shall see a singular mechanical energy of it presently in the serpent’s motion), in the voices of war and peace?  How much of the repose, how much of the wrath, folly, and misery of men, has literally depended on this one power of the air; on the sound of the trumpet and of the bell, on the lark’s song, and the bee’s murmur!