the physiological reactions evoked by them are important for our purpose only so far as they help us to understand the inner experiences with which they are correlated. A large part of our work, therefore, will consist in the psychological analysis of the experience of art and the motives underlying its production. We shall have to distinguish the elements of mind that enter into it, show their interrelations, and differentiate the total experience from other types of experience. Since, moreover, art is a social phenomenon, we shall have to draw upon our knowledge of social psychology to illumine our analysis of the individual's experience. Art is a historical, even a technical, development; hence the personal enjoyment of beauty itself is conditioned by factors that spring from the traditions of groups of artists and art lovers. No one can understand his pleasure in beauty apart from the pleasure of others.
In so far, on the other hand, as aesthetics is an attempt to define the purpose of art and so to f