"All changes in space which we see, hear, smell or taste are literally tactile impressions. All our senses are variations of our unique sense of touch. Two approaching objects touch one another when they finally meet without a noticeable space between them. ... This is what happens in any condensing matter in which the outer aspects move towards a centre... Each single part of matter approaches its neighboring part until the two collide, causing an impact or a pressure. It is space, which appears and disappears between and round object and in the movements of the particles of the object."

-- Rudolf von Laban

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