Martin McGuinness

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.

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.

There are clearly many good politicians who are guided by religious belief, so the mix can work. But there's a line to be drawn. It would be hugely dangerous for a country's laws to be set by the scriptures, and particularly those of the expansionist religions.

Set your sights high, the higher the better. Expect the most wonderful things to happen, not in the future but right now. Realize that nothing is too good. Allow absolutely nothing to hamper you or hold you up in any way.

I'm looking for all the things that are beneficial in the human genome. Everything that I do is based on a very simple principle: things that are beneficial will spread through populations very quickly.