For it is in the drama of cognition, the stages of apprehension, that [James] Joyce found the archetype of poetic imitation. He seems to have been the first to see that the dance of being, the nature imitated by the arts, has its primary analogue in the activity of the exterior and interior senses. Joyce was aware that this doctrine (that sensation is imitation because the exterior forms are already in a new matter) is implicit in Aquinas. He made it explicit in Stephen Hero and the Portrait, and founded his entire poetic activity on these analogical proportions of the senses.