This book draws from previously unpublished letters and interviews with physicists, theologians, and Sir John's close associates and family to present Sir John's ideas on pure unlimited love. Post, who was in dialogue with Sir John for fifteen years on this topic and who had founded the Institute for Research on Unlimited Love (www.unlimitedloveinstitute.com), addresses how John Templeton arrived at his philosophy as a youth growing up in Tennessee. Post also shares how classical Presbyterian ideas came to synergize in his mind with the more Eastern influences of American transcendentalism and the Unity School of Christianity and ponders if Sir John truly believed that science and spirituality might fully converge on the same view of Ultimate Reality with their very different ways of knowing. Is Ultimate Reality Unlimited Love? presents Sir John's hope for spiritual progress with the eventual convergence of ultimate reality and unlimited love.