It's not a question of faith. It's just common sense.
5 seconds sound clip from the Miracle on 34th Street (1947) movie soundboard.
You can hear this line at 01:12:04 in the Blu-ray version of the movie.
Quote context
[...]
- You can't just throw your career away because of a sentimental whim.
- But I'm not throwing my career away.
- But if Haislip feels that way, so will every other law firm in town.
- Then I'll open my own office.
- And what kind of cases will you get?
- It's not a question of faith. It's just common sense.
- Faith is believing in things when common sense tells you not to.
- You don't get ahead that way.
- That all depends on what you call getting ahead. Evidently, you and I have different definitions.
[...]