The dance, just as the performance of the actor, is kinesthetic art, art of the muscle sense. The awareness of tension and relaxation within his own body, the sense of balance that distinguishes the proud stability of the vertical from the risky adventures of thrusting and falling—these are the tools of the dancer.

Toward a Psychology of Art: Collected Essays (ed. Univ of California Press, 1966) - ISBN: 9780520021617