'''"It may be perpetual motion, but it will take forever to test it."'''
Cartoon by [https://www.lockhaven.edu/emeriti/simanekdonald.html Dr. Donald Simanek] from his museum collection of [https://web.archive.org/web/20160310103724/http://www.lhup.edu/~dsimanek/museum/unwork.htm Unworkable Devices].