“The course of truth never yet ran smooth.”
"That what Everybody Says must be True".
Sketches from Life (1846)
Context: When a story has gone the grand circuit, and travels back to us uncontradicted, we may reasonably begin to relax in our belief of it. If nobody questions it, it is manifestly a fiction; if it passes current, it is almost sure to be a counterfeit. The course of truth never yet ran smooth.