The correct attribution http://www.snopes.com/politics/quotes/carterpoor.asp is comedian John Fugelsang, on the TV program Viewpoint (29 May 2013)
Misattributed
“You don't have to be stupid to be a Christian,… but it probably helps.”
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Ambrose Bierce 204
American editorialist, journalist, short story writer, fabu… 1842–1914Related quotes
“I don't mind you thinking I'm stupid, but don't talk to me like I'm stupid”
“You don't have to be crazy to be a goalie, but it helps!”
Quoted in Kevin Shea, "One on One with Bernie Parent," http://www.legendsofhockey.net/html/spot_oneononep198403.htm Legends of Hockey.net (2005-11-07)
Source: Abaddon's Gate (2013), Chapter 39 (p. 404)
Source: As quoted in "Ralph Klein’s most memorable quotes" http://globalnews.ca/news/439807/ralph-klein-was-a-sound-bite-gold-mine/, Global News
“You can’t help being young, but it’s past time that you stopped being stupid.”
Interlude “Locke Stays for Dinner” section 1 (p. 121)
Source: The Lies of Locke Lamora (2006)
“No clever person can help here; I see that clearly. Here, only stupidity can help the stupid one!”
Original: (de) "Hier hilft kein Kluger, das seh’ ich klar: hier hilft dem Dummen die Dummheit allein!"
Source: Quotes from his operas, Siegfried, Mime, the dwarf (and master metal-smith), Act 1, Scene 3
“You can't help getting older, but you don't have to get old.”