[Steve_Seattle]

"You cannot reason someone out of an idea he was never reasoned into."

That's a keeper - wonder if this is Sullivan's or if it's an old bromide I somehow missed?

[headsonpikes]

I believe it's from one of the Scottish philosophers.

[saquin]

"It is useless to attempt to reason a man out of a thing he was never reasoned into." --- Jonathan Swift

http://www.quotationspage.com/quotes/Jonathan_Swift