A bright green cover with a recycling logo and a peace dove on it. And of course his picture: Franz. Designed like the quickly sprayed graffiti portrait of a revolutionary. It is immediately clear that Alois Prinz did not want to write a leisurely, contemplative, edifying read with his new biography. His biographies, written for young people as well as for adults, are often about people who have a permanent place in the cultural cosmos. But at the same time they hold secrets: Ulrike Meinhof, Simone de Beauvoir, Jesus. Francis sees Alois Prinz as a figure who is highly relevant today – a conservationist from 800 years ago.