From John Milton's Areopagitica, 1644.
"Though all winds of doctrine were let loose to play upon the earth, so Truth be in the field, we do injuriously, by licensing and prohibiting, to misdoubt her strength. Let truth and falsehood grapple; who ever knew truth put to the worst, in a free and open encounter?"
Dr. McKissic is asking Dr. Page for such a free and open encounter as Milton describes.