Intellect, we are told, will not give knowledge of things at a distance; indeed the function of science is said to be to explain all perceptions in terms of touch.
 Bertrand Russell, A History of Western Philosophy (1945). copy citation

Context

“Bergson wishes to make intellect “turn inwards on itself, and awaken the potentialities of intuition which still slumber within it.” The relation between instinct and intellect is compared to that between sight and touch. Intellect, we are told, will not give knowledge of things at a distance; indeed the function of science is said to be to explain all perceptions in terms of touch. “Instinct alone,” he says, “is knowledge at a distance. It has the same relation to intelligence that vision has to touch.” We may observe in passing that, as appears in many passages, Bergson is a strong visualizer, whose thought is always conducted by means of visual images.” source