Here is the second volume of <I>A Great Circle,</I> the highly acclaimed Mayfield family trilogy, from one of America's literary treasures. <P> Though a novel independent from <I>The Surface of Earth, The Source of Light</I> continues the saga of the Mayfield family, here focusing on Hutchins Mayfield, whose desire for self-knowledge removes him from his secure existence as a prep school teacher and takes him on a journey to Oxford and Italy to study and write. Hutchins comes back home for a family crisis but ultimately returns to England, where he achieves a maturity that enables him to cope with commitments, abandonments, and the creation of an honest personal agenda. <P> In <I>The Source of Light,</I> Reynolds Price combines gravity and buoyancy, a mythic sense of the past with the mysteries of place, to forge an encompassing portrait of the strange and various world one travels through in the quest for self-fulfillment.