"But the sense of humour remains healthy only when it deals with immediate issues and faces the obvious and surface irrationalities. It must move toward faith or sink into despair when the ultimate issues are raised. That is why there is laughter in the vestibule of the temple, the echo of laughter in the temple itself, but only faith and prayer, and no laughter, in the holy of holies."
January 1, 1970
https://en.wikiquote.org/wiki/Reinhold_Niebuhr