In 30 years, he published 58 books and hundreds of articles, translations not included. Many became classics in their respective fields. Even after his death, about half a dozen more books on diverse subjects like religion, education or politics were published in his name – based on almost finished manuscripts lying around in his office. There are more than a few colleagues I know who would give a lot to be as productive in their whole lifetime as Luhmann was after his death.
Thiago Ghisi liked this