In this new revised edition of his groundbreaking work, Professor J. Budziszewski questions the modern assumption that moral truths are unknowable. With clear and logical arguments he rehabilitates the natural law tradition and restores confidence in a moral code based upon human nature. What We Can't Not Know explains the rational foundation of what we all really know to be right and wrong and shows how that foundation has been kicked out from under western society. Having gone through stages of atheism and nihilism in his own search for truth, Budziszewski understands the philosophical and...