Some voices, among them Küng, deem this a turn towards conservatism, while Ratzinger himself said in a 1993 interview, "I see no break in my views as a theologian the years". Ratzinger continued to defend the work of the Second Vatican Council, including "Nostra aetate," the document on respect of other religions, ecumenism and the declaration of the right to freedom of religion. Later, as the Prefect of the Congregation for the Doctrine of the Faith, Ratzinger most clearly spelled out the Catholic Church's position on other religions in the 2000 document "Dominus Iesus" which also talks about the Catholic way to engage in "ecumenical dialogue". During his time at Tübingen University, Ratzinger published articles in the reformist theological journal "Concilium", though he increasingly chose less reformist themes than other contributors to the magazine such as Küng and Schillebeeckx.