“But it is not alone the harmony of music which has such a power over the mind. The harmony of colors, every art and science, has the same power. Even the most common craft, and the most prosaic of all prose, the chase after the dollar, may take possession of a man’s soul and prostrate him in adoration before its idol.”

Letter 3
Letters on Logic: Especially Democratic-Proletarian Logic (1906)

Original: (it) La musica è lo strumento più antico al mondo, la miglior medicina, l'armonia e la pura espressione di ogni anima.
Source: prevale.net

Source: The Art of the Dance (1928), p. 78.
Context: The harmony of music exists equally with the harmony of movement in nature.
Man has not invented the harmony of music. It is one of the underlying principles of life. Neither could the harmony of movement be invented: it is essential to draw one’s conception of it from Nature herself, and to see the rhythm of human movement from the rhythm of water in motion, from the blowing of the winds on the world, in all the earth’s movements, in the motions of animals, fish, birds, reptiles, and even in primitive man, whose body still moved in harmony with nature….. All the movements of the earth follow the lines of wave motion. Both sound and light travel in waves. The motion of water, winds, trees and plants progresses in waves. The flight of a bird and the movements of all animals follow lines like undulating waves. If then one seeks a point of physical beginning for the movement of the human body, there is a clue in the undulating motion of the wave.

La peinture est le plus beau de tous les arts; en lui se résument toutes les sensations, à son aspect chacun peut, au gré de son imagination, créer le roman, d'un seul coup d'œil avoir l'âme envahie par les plus profonds souvenirs; point d'effort de mémoire, tout résumé en un seul instant. — Art complet qui résume tous les autres et les complète. — Comme la musique, il agit sur l'âme par l'intermédiaire des sens, les tons harmonieux correspondant aux harmonies des sons; mais en peinture on obtient une unité impossible en musique où les accords viennent les uns après les autres, et le jugement éprouve alors une fatigue incessante s'il veut réunir la fin au commencement. En somme, l'oreille est un sens inférieur à celui de l'œil. L'ouïe ne peut servir qu'à un seul son à la fois, tandis que la vue embrasse tout, en même temps qu'à son gré elle simplifie.
Quote of Gauguin from: Notes Synthéthiques (ca. 1884-1885), ed. Henri Mahaut, in Vers et prose (July-September 1910), p. 52; translation from John Rewald, Gauguin (Hyperion Press, 1938), p. 161.
1870s - 1880s

The Ascent of Man (1973)

Source: The Master of Go (1951), Ch. 38, p. 164.
Context: That play of black upon white, white upon black, has the intent and takes the form of creative art. It has in it a flow of the spirit and a harmony of music. Everything is lost when suddenly a false note is struck, or one party in a duet suddenly launches forth on an eccentric flight of his own. A masterpiece of a game can be ruined by insensitivity to the feelings of an adversary.

De Pace Fidei (The Peace of Faith) (1453)

Source: from: 'A letter to Maurice Denis, p. 237

A New View of Society (1813-1816)