Idioms and Phrases with never say never
never say never
Nothing is impossible, anything can happen, as in Mary said Tom would never call her again, but I told her, “Never say never.” This expression was first recorded in Charles Dickens's Pickwick Papers (1837).
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.