The comedian George Carlin used to say that he was a Roman Catholic “until I reached the age of reason.” For Carlin, that happened sometime in the eighth grade, when all his probing questions about faith were answered with, “well, it’s a mystery.” Of course, as a lifelong contrarian, Carlin also wondered if it was O.K. for a vegetarian to eat animal crackers.

I thought of him while reading the latest institution-shifting document from Pope Francis, “Amoris Laetitia” — the Joy of Love. The title sets the tone for the continuation of a quiet revolution. Note that it’s not called the Job of Love, the Duty of Love or the Unbearable Burden of Love. Instead, the pope implies that there’s considerable fun to be had in human relationships. You can even find in its 256 pages a mention of the “erotic dimension” of love and “the stirring of desire.” Yes, sex. The pope approves of it, in many forms.

And while skeptics were disappointed that the latest apostolic exhortation did not change church teachings regarding Catholics who are divorced or in same-sex marriages, the document signals the end for one particular kind of medieval millstone — Catholic guilt, especially in regard to sex.

He’s not talking here about the guilt that generations of clerics and their enablers should feel for the crimes of sexual abuse against the young, an institutional cancer tied to its own awful pathology.