There Are Opinions, And Then There Are Facts

I’m back to inviting readers to submit quotations whose origins they want me to try to trace, using my book, The Yale Book of Quotations, and my more recent researches.
Enter your name asked:

“I’d like to know the origin of the statement, ‘You are entitled to your own opinions, but not to your own facts.’   I’ve seen a version of it attributed to Daniel Patrick Moynihan, but it would be fun to know if he’s the origin, or if he quoted someone else.”

This is often attributed to Moynihan. However the forthcoming Yale Book of Modern Proverbs has as its earliest citation for this saying the Deming (New Mexico) Headlight, Jan. 6, 1950, which printed “Every man has a right to his own opinion, but no man has a right to be wrong in his facts.”  The New Mexico newspaper attributed it to Bernard M. Baruch. Since 1950 was long before Moynihan came into prominence, Baruch seems to have the strongest claim to priority.
Do any readers have any other quotations whose origins they would like me to attempt to trace?