The line that describes the beautiful is elliptical. It has simplicity and constant change. It cannot be described by a compass, and it changes direction at every one of its points.
Rudolf ArnheimJust as a chemist "isolates" a substance from contaminations that distort his view of its nature and effects, so the work of art purifies significant appearance. It presents abstract themes in their generality, but not reduced to diagrams.
Rudolf ArnheimFrom building a fire one can learn something about artistic composition. If you use only small kindling and large logs, the fire will quickly eat up the small pieces but will not become strong enough to attack the large ones. You must supply a scale of sizes from the smallest to the largest. The human eye also will not make its way into a painting or building unless a continuum of shapes leads from the small to the large, from the large to the small.
Rudolf ArnheimEntropy theory is indeed a first attempt to deal with global form; but it has not been dealing with structure. All it says is that a large sum of elements may have properties not found in a smaller sample of them.
Rudolf Arnheim