Dr. Ruth Westheimer, the world-famous sex therapist who stood just four feet seven inches tall, delivered the commencement address at Trinity College in 2004. At seventy-five years old, she had earned the right to speak about courage — as a child, she was sent on a train to Switzerland to escape the Nazis, and nearly all the children on that transport, including Ruth, became orphans. Dr. Ruth told the graduates about her favorite animal, the turtle, which must stick its neck out in order to move. She used this Yiddish concept of chutzpah — audacious nerve — to describe the quality she considered most essential to a full life. Her own career was proof: she didn't become 'Dr. Ruth' until her mid-fifties, when she accepted the unprecedented challenge of discussing orgasms, penises, and vaginas on live radio. That single act of chutzpah transformed an unknown college professor into an international icon.