Conférence donnée par Dieter Birnbacher dans le cadre du Séminaire Développement durable et économie de l'environnement, le 21 février 2006.

The paper considers a number of models of how indirect motivations might support conformity with future ethical norms: "chain of love", "eternal values", and "self-transcendence" and judges their merits and demerits in the context of mechanisms of internal and external self-binding.