“Visual space is the space of detachment. Audile-tactile space is the space of involvement.”

“Tactility is the space of the interval; acoustic space is spherical and resonant.”

Marshall McLuhan (1911–1980) Canadian educator, philosopher, and scholar-- a professor of English literature, a literary critic, and a …

“Tactility is space of the interval.”

Marshall McLuhan (1911–1980) Canadian educator, philosopher, and scholar-- a professor of English literature, a literary critic, and a …

“Tactile space separates us from objects, as opposed to visual space, which separates objects from one another. I have spent my life trying to paint the former kind.”

Georges Braque (1882–1963) French painter and sculptor

“There is no pure visualization in the sense of a priori philosophies; every visualization is determined by previous sense perceptions, and any separation into perceptual space and space of visualization is not permissible, since the specifically visual elements of the imagination are derived from perceptual space. What led to the mistaken conception of pure visualization was rather an improper interpretation of the normative function… an essential element of all visual representations. Indeed, all arguments which have been introduced for the distinction of perceptual space and space of visualization are base on this normative component of the imagination.”

Hans Reichenbach (1891–1953) American philosopher

“What particularly attracted me [in his painting 'Still-life with Musical instruments', 1908 – 1909].... was the materialization of this new space that I felt to be in the offing. So I began to concentrate on still-life's, because in the still-life you have a tactile, I might almost say a manual space... This answered to the hankering I have always had to touch things and not merely see them. It was this space that particularly attracted me, for this was the first concern of Cubism, the investigation of space.... In tactile space you measure the distance separating you from the object, whereas in visual space you measure the distance separating things from each other. This is what led me, long ago, from landscape to still-life.”

Georges Braque (1882–1963) French painter and sculptor

“To say that a body or its gravitational field 'bends in space' in its vicinity is the discuss visual space in acoustic terms.”

Marshall McLuhan (1911–1980) Canadian educator, philosopher, and scholar-- a professor of English literature, a literary critic, and a …

“You can see the existence of these beautiful signed languages which are incredibly visual, and they require space, they require space to grow.”

Emilio Insolera (1979) Actor and film producer

“We must… maintain that mathematical geometry is not a science of space insofar as we understand by space a visual structure that can be filled with objects - it is a pure theory of manifolds.”

Hans Reichenbach (1891–1953) American philosopher

“Minkowski… supposed that this fourth dimension of time was not detached from and independent of the three dimensions of space. He introduced a new four-dimensional space to which ordinary space contributed three dimensions, and time one; we may call it 'space-time'…. The succession of positions which a particle occupied in ordinary space at a succession of instants of time would be represented by a line in space-time; this he called the 'world-line' of the particle…. Newton's absolute space and absolute time fell out of science, and they carried much with them in their fall. First to go was the concept of simultaneity…. It now became necessary to find a way of treating gravitation which should not involve simultaneity. Einstein found through the medium of his 'Principle of Equivalence'.”

James Jeans (1877–1946) British mathematician and astronomer