In Plain Sight, Season 4

Mary:
[voiceover] Back at our Lady of Immaculata, the nuns taught us that getting into college and/or heaven was a matter of sitting up straight, shutting your mouth, and keeping your eyes in the front of the class. But the sisters' best intentions didn't always pave the way to the Ivy League, let alone the afterlife. The fallacy is believing that being good means doing well. That walking the straight and narrow, minding your P's and Q's, and following the golden rule will, in the long run, reap rewards.