It was the idea of someone a lot like you: a busy person counted on by many, with more tasks than time on her hands. But she was someone who also wanted to give back – to do just one small thing that would be important in the life of another.

Krista Tippett is a journalist and author who created and hosts the public radio program "On Being." An episode of "On Being," focusing on September 11, 2001, was recorded before a live audience at St. Paul's Chapel on September 6, 2011.