In this new revised edition of his groundbreaking work, Professor J. Budziszewski questions the modern assumptionthat moral truths are unknowable. With clear andlogical arguments he rehabilitates the natural law traditionand restores confidence in a moral code based upon humannature.What We Can't Not Know explains the rational foundationof what we all really know to be right and wrong and showshow that foundation has been kicked out from under westernsociety. Having gone through stages of atheism and nihilismin his own search for truth, Budziszewski understands thephilosophical and personal roots of moral relativism. Withwisdom born of both experience and rigorous intellectualinquiry, he offers a firm foothold to those who are attemptingeither to understand or to defend the reasonableness oftraditional morality.While natural law bridges the chasms that can be causedby religious and philosophical differences, Budziszewskibelieves that natural law theory has entered a new phase, in which theology will again have pride of place. While religiousbelief might appear to hamper the search for commonground, Budziszewski demonstrates that it is not an obstacle, but a pathway to apprehending universal norms of behavior.