In the courtroom, lawyers depend on rules of evidence to make their arguments. A case is made by establishing certain facts from which proof can be determined. But what happens when the truth seems to be a matter of faith? Can the legal mind discern the validity of one's belief or unbelief? Nationally recognized trial lawyer Mark Lanier turns his analytical mind to the arguments for atheism and agnosticism. With critical thinking and precision of thought, he examines the rationales made for unbelief and assesses them on their own terms, finding points of strength and weakness in their logic and coherence. He considers whether atheistic frameworks give satisfactory and consistent explanatory answers for understanding human existence and the world around us. He cross-examines the strongest arguments of prominent atheists and also interrogates the questions of agnostics as to whether God is knowable. Through his evenhanded, levelheaded approach, Lanier challenges us all to decide for ourselves what we believe.