A reductive-naturalistic view of nature, which has become increasingly widespread in recent decades and draws its plausibility from the successes of the natural sciences, medicine and modern technology, and most recently from the successes of brain research in particular, represents a Christian as well as a humanistic image of human beings, to whom freedom (of will) and responsibility belong. Philosophers and theologians who nevertheless cling to (libertarian) free will often resort to just one philosophical paradigm for argumentation. Hildegard Peters integrates a broad range of different philosophical and cognitive-scientific approaches to an overall perspective on the subject of free will, which represents an innovative and convincing counter-proposal to the reductive-naturalistic view of man.