 The play that Craig was performing with his puppets (when he gets  smacked by an angry parent) is based on the letters of Abelard and  Heloise, written between 1115 and 1117 AD, which were found, copied  and abridged by Johannes de Vepria, a 15th century Cistercian monk,  into "Ex Epistolis duorum amantium" ("From the Letters of Two  Lovers"). This became a classic document of early romantic (tragic)  love used by many artists in their work including  William Shakespeare (I) (qv) in Romeo and Juliet. In addition,  screenwriter Charlie Kaufman (qv)s later project  _Eternal Sunshine of the Spotless Mind (2004)_ (qv) took its title,  and no small amount of inspiration, from Alexander Pope (qv)s  "Eloisa to Abelard."