Abstract

In a famous passage in Perpetual Peace , Kant discusses a “natural guarantee“ of perpetual peace. Basically, this natural guarantee relieves human beings of the obligation to actively promote the development of law in the world, because one can expect it to develop anyway. Yet Kant calls the guarantee practical, meaning the guarantee has no direct prognostic value. One can see that this guarantee is merely a guarantee of success, which ensures that human conduct aimed toward attaining perpetual peace will always meet with natural conditions that do not rule out success from the start. Furthermore, this guarantee gives human beings the means of establishing external legal relationships within which even those persons who only follow their own interests will act externally in accordance with the law. In this way, the “natural guarantee“ prevents political leaders from escaping responsibility by claiming that attaining perpetual peace is impossible.