“When we pay attention to nature's music, we find that everything on the Earth contributes to its harmony.”

Source: Principles of Economics (1998-), Ch. 2. Thinking Like an Economist; p. 21

55 min 0 sec
Cosmos: A Personal Voyage (1990 Update), The Harmony of the Worlds [Episode 3]
Context: As a boy Kepler had been captured by a vision of cosmic splendour, a harmony of the worlds which he sought so tirelessly all his life. Harmony in this world eluded him. His three laws of planetary motion represent, we now know, a real harmony of the worlds, but to Kepler they were only incidental to his quest for a cosmic system based on the Perfect Solids, a system which, it turns out, existed only in his mind. Yet from his work, we have found that scientific laws pervade all of nature, that the same rules apply on Earth as in the skies, that we can find a resonance, a harmony, between the way we think and the way the world works.
When he found that his long cherished beliefs did not agree with the most precise observations, he accepted the uncomfortable facts, he preferred the hard truth to his dearest illusions. That is the heart of science.

Source: Women Can't Hear What Men Don't Say (2000), p. 33.

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.

Banana Pancakes.
Song lyrics, In Between Dreams (2005)

Nobel lecture (1989)
Context: Because we all share this small planet earth, we have to learn to live in harmony and peace with each other and with nature. That is not just a dream, but a necessity. We are dependent on each other in so many ways, that we can no longer live in isolated communities and ignore what is happening outside those communities, and we must share the good fortune that we enjoy.

"How We Do Things" (feat. Monty)

Kwanzaa: Origin, Concepts, Practice (1977)

Source: Seraphita (1835), Ch. 2: Seraphita.
Context: If we study Nature attentively in its great evolutions as in its minutest works, we cannot fail to recognize the possibility of enchantment — giving to that word its exact significance. Man does not create forces; he employs the only force that exists and which includes all others, namely Motion, the breath incomprehensible of the sovereign Maker of the universe.