The study of Aesthetics presents difficult problems and the solution of them is made more arduous if the field of observation is unduly constricted. So long as Aesthetics is confined to an examination of Beauty research is likely to prove as sterile as is a study of Behaviour which confines itself to the single factor of pleasure. Human psychology made greater progress when it gave recognition to the factors of mental pain, anxiety and guilt; it would therefore seem prudent to accord more significance than is commonly done in the literature to these disturbing but powerful forces in our æsthetic inclinations,