A few years ago, the philosopher Alain de Botton gave a TED talk on "A kinder, gentler philosophy of success" where he quotes St. Augustine supposedly having written in the City of God that "It's a sin to judge any man by his post" though he declares himself to be a "secular" person.
I have just finished my year-long reading the City of God and found no explicit statement about judging someone by their profession. I did find Augustine listing what he means by sin close to the end of the reading (eg. books 20 and 22) but I became curious how Alain de Botton came to this interpretation.
Could this be a misattribution?