people around the globe as he s done for decades. he goes with berma and he meets with three guys that had been political prisoners, and when he started to speak, one of them started to cry because they had heard his voice so many times. reporter: for over 30 years salter has helped mccain convey his essence. you ve written a lot of words for and with john mccain. what do you think the most important are? we were born to love and we were born to have the courage for it, so be brave. the rest is easy. i thought that was the most mccain-esque thing he had ever said. reporter: that or maybe this in the final chapter. we need each other. we need friends in the world and they need us. the bell tolls for us, my friends. reporter: that, of course, is a reference to for whom the bell tolls by ernst hemingway, mccain s favorite book of all