so the highest art is that which best embodies the immortal thought of the universe as reflected in the mirror of man's consciousness; that music, as speaking the most spiritual language of any of the art-family, is burdened with the most pressing responsibility as the interpreter between the finite and the infinite; that all its forms must be measured by the earnestness and success with which they teach and suggest what is best in aspiration and truest in thought; that music, when wedded to the highest form of poetry (the drama), produces the consummate art-result, and sacrifices to some extent its power of suggestion, only to acquire a greater glory and influence, that of investing definite intellectual images with spiritual raiment, through which they shine on the supreme altitudes of ideal thought; that to make this marriage perfect as an art-form and fruitful in result, the two partners must come as equals, neither one the drudge of the other; that in this organic fusion music and poetry contribute, each its best, to emancipate art from its thraldom to that which is merely trivial, commonplace, and accidental, and make it a revelation of all that is most exalted in thought, sentiment, and purpose. Such is the æsthetic theory of Richard Wagner's art-work. III. It is suggestive to note that the earliest recognised function of music, before it had learned to enslave itself to mere sensuous enjoyment, was similar in spirit to that which its latest reformer demands for it in the art of the future. The glory of its birth then shone on its brow. It was the handmaid and minister of the religious instinct. The imagination became afire with the mystery of life and Nature, and burst into the flames and frenzies of rhythm. Poetry was born, but instantly sought the wings of music for a higher flight than the mere word would permit. Even the great epics of the "Iliad" and "Odyssey" were originally sung or chanted by the Homeridæ, and the same essential union seems to have been in some measure demanded afterwards in the Greek drama, which, at its best, was always inspired with the religious sentiment. There is every reason to believe that the chorus of the drama of Æschylus, Sophocles, and Euripides uttered their comments on the action of the play with such a prolongation and variety of pitch in the rhythmic intervals as to constitute a sustained and melodic recitative. Music at this time was an essential part of the drama. When the creative genius of Greece had set towards its ebb, they were divorced, and music was only set to lyric forms. Such remained the status of the art till, in the Italian Renaissance, modern opera was born in the reunion of music and the drama. Like the other arts, it assumed at the outset to be a mere revival of antique traditions. The great poets of Italy had then passed away, and it was left for music to fill the void.