上帝公设与道德敬重：康德伦理体系的双重维度

The Postulate of God and Moral Respect: On the Dual Dimensions of Kant’s Ethical System

摘要: 康德伦理学中，“敬重”作为核心道德动机源于对道德法则的理性认识。然而，为克服有限理性者在经验现实中面临的“德福不一致”内在困境，并赋予道德追求终极意义，康德在实践理性领域引入了“上帝存在”作为不可或缺的公设。上帝在这一体系中具有双重功能：首先，作为神圣立法者、仁善统治者与公正审判者，上帝通过全能全善的权威确保道德法则的普遍约束力与“德福一致”至善目标的可能性，将对道德法则的敬重情感延伸至其神圣源头；其次，作为纯粹实践理性自身客体化的道德理想化身，上帝为人类的道德完善提供了终极范本与追求目标。对上帝的“敬重”实质上是对内在理性道德法则之敬重的投射与升华，构成康德“理性宗教”的关键环节，在保障道德自律核心的同时，为敬重动机的合理性及至善追求提供了实践层面的终极辩护与意义支撑。

Abstract: In Kantian ethics, “moral reverence” (Achtung) is the core moral motivation that stems from the rational recognition of moral law. However, to overcome the inherent dilemma of “the highest good” (summum bonum)—namely, the inconsistency between virtue and happiness (Glückswürdigkeit)—faced by finite rational beings in empirical reality, and to endow the moral pursuit with ultimate meaning, Kant introduced the “existence of God” as an indispensable postulate within the practical reason. God has a dual function in this system: Firstly, as the divine legislator, benevolent ruler, and just judge, God, through omnipotent and wholly good authority, guarantees the universal binding force of the moral law and the possibility of achieving the “highest good” (where virtue is rewarded with happiness), thereby extending the feeling of reverence for the moral law towards its divine source. Secondly, as the personified moral ideal objectified by pure practical reason itself, God provides the ultimate model and goal for human moral perfection. “Reverence” for God is essentially the projection and sublimation of reverence for the inner rational moral law, constituting a key component of Kant’s “religion of reason.” While safeguarding the core of moral autonomy, this provides, on the level of practice, the ultimate justification and meaning for both the rationality of the reverence motivation and the pursuit of the highest good.