Somebody else searched, and Bohr did seem to say it, but he was quoting a neighbor at the vacation home. https://backreaction.blogspot.com/2011/12/advent-calen

Somebody else searched, and Bohr did seem to say it, but he was quoting a neighbor at the vacation home. https://backreaction.blogspot.com/2011/12/advent-calendar-21-bohr-and-horseshoe.html https://backreaction.blogspot.com/2011/12/advent-calendar-21...