Abstract

The author recalls a distinction between philosophy conceived as “analytics of truth” and philosophy as “ontology of the actual.” The latter might be seen as a diagnostics of our times. For this second type of philosophy questions of legitimation are prominent. According to the author, one can distinguish three main sources of legitimacy of beliefs and practices: religion, reason, and nature. Reason has been considered the most important legitimating ground as far as modernity is concerned. Nevertheless, it has never been very clear what reason as a source of legitimation amounts to. The author, finally, points to the fact that, in times of increasing menace to the biosphere, “nature”– metaphorically speaking – may set a standard for human laws.