Once we accept our limits, we go beyond them.

We searched for a primary Einstein source for "Once we accept our limits, we go beyond them" and found none — the line does not appear in *The Collected Papers of Albert Einstein*, in his published essays and correspondence, in transcripts of his major lectures, or in Alice Calaprice's authoritative *The Ultimate Quotable Einstein*, which catalogs both genuine and spurious attributions. The phrasing also does not match Einstein's documented style, which tended to be more precise in its treatment of knowledge and limits. In tracing the wording through print, however, we found the same sentence credited not to Einstein but to the writer Brendan Francis Behan (rendered as "Brenden Francis" and "Brendan Francis Behan") in Bruce F. Singer's *Black Duck Moments Every Day* (2018) and Jon Kaden's *We Are Mountains* (2011), while books such as Bradley Charbonneau's *Repossible Box Set Complete* (2021) and Vicente Njoku's *Success Plan and Positioning Strategy 7.0* (2015) attach it to Einstein — none of them offering a primary source. This split between two named candidates raises a genuine authorship question rather than idle aggregator noise, but the "Brendan Francis" attribution is itself thinly sourced and not tied to a specific dated work, so it does not rise to a documented earlier instance or a definitively stronger origin that would overturn the Einstein credit. What we have is a widely repeated inspirational line pinned to Einstein without any confirming primary text, and a competing but equally unsupported credit to another writer. Absent a citable primary source establishing either author first, this remains a common but unconfirmed Einstein attribution. Our conclusion is attributed.