There is no theory. You merely have to listen. Pleasure is the law. - Claude Debussy

Music is a mysterious mathematical process whose elements are part of Infinity. … There is nothing more musical than a sunset. He who feels what he sees will find no more beautiful example of development in all that book which, alas, musicians read but too little — the book of Nature.

Do you really think that my music is devoid of religious antecedents? Do you wish to put an artist's soul under restraint? Do you find it difficult to conceive that one who sees mystery in everything — in the song of the sea, in the curve of the horizon, in the wind and in the call of the birds — should have been attracted to a religious subject? I have no profession of faith to utter to you: but, whichever my creed may be, no great effort on my part was needed to raise me to the height of d'Annunzio's mysticism. I can assure you that my music was written in exactly the spirit as if it had been commissioned for performance in church. Have I succeeded in expressing all that I felt? It is for others to decide. Is the faith which my music expresses orthodox? I do not know; but I can say that it is my own, expressed in all sincerity.

The music I desire must be supple enough to adapt itself to the lyrical effusions of the soul and the fantasy of dreams.