 We also think that beauty, ugliness and other aesthetic properties depend on nonaesthetic properties. Dependence contrasts with mind-independence in that it says what aesthetic properties do depend on, as opposed to what they do not depend on: the aesthetic properties of a thing depend on its nonaesthetic properties. This dependence relation implies (but is not identical with) the supervenience relation or relations: (a) two aesthetically unlike things must also be nonaesthetically unlike; (b) something could not change aesthetically unless it also changed nonaesthetically; and (c) something could not have been aesthetically different unless it were also nonaesthetically different. These are, respectively: cross-object supervenience, cross-time supervenience, and cross-world supervenience. (“Supervenience” has often been discussed under the heading of “dependence” but actually they are distinct relations, related in a complex way.) Sibley’s papers “Aesthetic Concepts” and “Aesthetic/Nonaesthetic” were pioneering discussions of the dependence of the aesthetic on the nonaesthetic (Sibley 1959, 1965). (It is interesting that he never described the dependence in modal terms.)