The mere exposure to masterworks does not suffice. Too many persons visit museums and collect picture books without ever gaining access to art. The inborn capacity to understand through the eyes has been put to sleep and must be reawakened . This is best accomplished by handling pencils, brushes, chisels and perhaps cameras. But there again, bad habits and misconceptions will block the path of the unassisted. Ofter he is helped most effectively by visual evidence: by being shown weak spots or presented with good examples.
Rudolf Arnheim, Art And Visual Perception, University of California Press, 1974.