While you're holding your breath for Caritas in veritate (out July 7, they say), why not revisit some of the greatest hits of the past century? At the USCCB media blog, Don Clemmer has a rundown of social encyclicals you should know, from Leo XIII's Rerum novarum up through Benedict's Deus caritas est. And it's complete with links to the official texts on the Vatican's Web site, suitable for printing and perusing over the holiday weekend. (Just don't try reading them onscreen, unless you're looking for a little mortification -- squinting at that Times-New-Roman-on-parchment-paper design is a sure way to get a headache.)