It is easy to forget, also, how large a part of any poet's emotional life is conducted in the mind and the imagination --so much more real, for him, than the world of physical appearances, so tangible that he will slide at will from the real to the imaginary until, in the end, there is no clear frontier between them. The passions which stirred me were embodied in this secret world, this dream-dominion of pure, silver-clear, crystalline adoration, so that my creative imagination could dwell on some loved face or body and, in fantasy, find fulfillment there without disturbing the delicate balance of unknowing which governed my conscious thoughts. I burned, yet the fire was contained, transmuted. As I grew older, inevitably, the perilous frontier between desire and knowledge became less distinct; this was the time of nightmare, of knowing-and-not-knowing, when, waking, I closed my eyes deliberately to what my mind understood, but refused to accept. It is not hard to understand, now, that state of latent, unexplored desire which had so instantaneous and devastating effect on Chloe.
--from Peter Green's excellent novel on Sappho: The Laughter of Aphrodite.