"I am so disappointed when I meet nuns who are joyless, who may smile with the smile of a flight attendant but not with the smile of joy that comes from within," the pontiff told nuns at the Santa Chiara cloistered convent in the Italian city of Assisi.

Pope Francis meets with cloistered nuns at the St. Chiara Basilica, in Assisi, on October 4, 2013. Pic/AFP