Ethics Without God

This monograph presents a systematic defense of secular ethics, arguing that morality neither requires nor benefits from theistic foundations. Nielsen directly challenges the widespread assumption that ethical values and obligations depend upon God's existence or commands, developing instead a naturalistic account of morality grounded in human needs, interests, and rational reflection.

The work engages critically with divine command theory and other theological approaches to ethics, demonstrating their philosophical inadequacies. Nielsen argues that basing morality on God's will generates intractable problems, including the classic Euthyphro dilemma: either God commands what is good because it is good (making God irrelevant to morality's foundation), or something is good merely because God commands it (reducing morality to arbitrary divine decree). He contends that theological ethics ultimately fails to provide genuine moral guidance or justification.

Nielsen develops his positive case through careful analysis of moral language and practice. He argues that moral concepts and judgments function meaningfully within purely human contexts, requiring no supernatural reference points. The work draws on ordinary language philosophy and naturalistic approaches to show how ethical reasoning operates through consideration of human welfare, fairness, and social cooperation. Nielsen maintains that secular moral philosophy can account for ethics' normative force and objectivity without invoking transcendent authorities.

The text addresses common objections to godless morality, including claims that atheism leads inevitably to nihilism or relativism. Nielsen demonstrates that rejecting theological ethics need not undermine moral seriousness or shared values. He argues that humanistic ethics, precisely because it focuses on actual human needs and capabilities, provides firmer foundations for moral life than systems dependent on controversial metaphysical claims about divine existence and nature.

Nielsen's contribution proves particularly significant for its systematic character and philosophical rigor. Rather than merely asserting atheism's compatibility with ethics, he constructs detailed arguments showing how morality functions independently of religious belief. The work engages seriously with sophisticated theological positions while defending secular ethics on philosophical rather than polemical grounds. His analysis influences subsequent debates about morality's foundations, challenging both believers and nonbelievers to examine assumptions about ethics' relationship to religion. The monograph remains essential reading for understanding twentieth-century developments in moral philosophy's intersection with philosophy of religion.