"Man’s nature is twofold, an outer and an inner. The senses to which he offers himself as a subject for art are those of vision and of hearing; to the eye appeals the outer man, the inner to the ear … and the more distinctly can the outer man express the inner, the higher does he show his rank as an artistic being.
…But the inner man can only find direct communication through the ear, and that by means of his voice’s tone. Tone is the immediate utterance of feeling and has its physical seat within the heart, whence start and whither flow the waves of life-blood. Through the sense of hearing, tone urges forth from the feeling of one heart to the feeling of its fellow."
— quoted from Richard Wagner
"Passing again beneath the ginkgo … in the contemplation of the shower of leaves the fundamental thing was not so much the perception of each of the leaves as of the distance between one leaf and another, the empty air that separated them. What I seemed to have understood was this: an absence of sensations over a broad part of the perceptive field is the condition necessary for our sensitivity to concentrate locally and temporally, just as in music a basic silence is necessary so that the notes will stand out against it."
— quoted from Italo Calvino - If on a Winter’s Night a Traveler (via janetsquared)