'All of them are different, like the fingers on a hand.'

[Pope] Francis has frequently used his public audience in St. Peter's Square as a venue to focus on the importance of the family.

In his talk, Francis repeatedly praised children as "the joy of family and society" and the key to humanity's future. As he often does, he departed from his prepared text to speak off the cuff, at one point noting that he was one of five children growing up in Argentina, and that when his mother was asked which was her favorite child she would compare them to her five fingers.

"If you hit this one it hurts me, if you hit that one, it hurts me," he recalled his mother saying. "All of them are mine. All of them are different, like the fingers on a hand."

—David Gibson, "Pope Francis: Opting not to have children a 'selfish choice,'" Religious News Service, February 11, 2015