In an interview, Billy Collins quoted Auden's famous line that "poetry makes nothing happen," but Mr. Collins tempered that comment by adding: "I think there are some cases where it can. I don't think a group of American writers is going to bring peace to the Middle East, but it puts something in the media that is a counterbalance to the growling and hostilities that fill the pages. It would have a positive and softening influence on things." And while Mr. Collins said he has agreed to join a tour abroad, he added, "It's not a particularly good time for unarmed American poets to be wandering around Jordan and Syria."