Abstract

The general aim of this paper is to elucidate Kant's juridical understanding of the duty not to lie and to situate it within his account of ‘The right of a state’ and of ‘The right of nations’. The first section will introduce the distinction Kant draws between two senses in which a liar can be said to wrong another, namely, ‘materially’ and ‘formally’. The second section will be devoted to clarifying what Kant means by a ‘formal wrong’ (or a ‘wrong in general’), by focusing on his use of this concept in the context of international relations. The third section will examine why a liar can be said to always do wrong ‘formally’. And the fourth section will show that what holds for individuals also holds for states in their mutual relationships: they are never to deceive one another, not even when innocent lives are at stake, because doing so would ‘subvert the right of human beings as such.'