Martin McGuinness

Obviously, Ian Paisley and I were regarded as very bitter opponents. When we decided in March 2007 to govern together, both of us understood that we weren't going to change our views but that we had to work with one another if we were to end the conflict and move forward.

I lost a lot of friends at the hands of the British Army. The person who actually introduced me to my wife, Colm Keenan, was murdered by the British Army. He was a member of the IRA, but he was unarmed.

John Quincy Adams ranks with Jimmy Carter on the roster of ex-presidential redemption. Instead of completing a biography of his father, he let himself be elected to the House, where he spent nine terms in Whiggish opposition to the Democrats, supporting a national bank and a protective tariff and internal improvements.