Watching the stretching

"Let us imagine an infinitely small piece of elastic, contracted, it that were possible, to a mathematical point. Let us draw it out gradually in such a way as to bring out of the point a line which will grow progressively longer. Let us fix our attention not on the line as line, but on the action which traces it. Let us consider, that this action, in spite of its duration, is indivisible if one supposes it goes on without stopping [...]. Let us take our mind off the space subtending the movement and concentrate solely on the4 movement itself, on the act of tension or extension, in short, a pure mobility."

Henri Bergson, The Creative Mind: An Introduction to Metaphysics, A Citadel Press Book, Carol Publishing Group, New York 1992, p. 164, 165