As the author of The Catholic Church: A Short History, I want to say quite openly, right at the beginning, that despite all my experiences of how merciless the Roman system can be, the Catholic Church, this fellowship of believers, has remained my spiritual home to the present day.

That has consequences for this book. Of course, the history of the Catholic Church can also be told in a different way. A neutral description of it can be given by experts in religion or historians who are not personally involved in this history. Or it can be described by a hermeneutical philosopher or theologian, concerned with understanding, for whom to understand everything is also to forgive everything. However, I have written this history as someone who is involved in it. I can understand phenomena like intellectual repression and the Inquisition, the burning of witches, the persecution of Jews, and discrimination against women from the historical context, but that does not mean that I can therefore forgive them in any way. I write as one who takes the side of those who became victims or already in their time recognized and censured particular church practices as being un-Christian.

To be quite specific and quite personal, I write as one who was born into a Catholic family, in the little Swiss Catholic town of Sursee, and who went to school in the Catholic city of Lucerne.

I then lived for seven whole years in Rome in the elite papal Collegium Germanicum et Hungaricum and studied philosophy and theology at the Pontifical Gregorian University. When I was ordained priest I celebrated the Eucharist for the first time in St. Peter's and gave my first sermon to a congregation of Swiss Guards.

After gaining my ...