Professor John Harris is now giving the final of his 3 Princeton University lectures at the JMI meeting, speaking on 'enhancement, justice and rights: immortality'. I met John around four years ago in Manchester, while I was there for a National Olympic Academy meeting and it is good to catch up with him again here.I think first I read his Wonderwoman and Superman many years ago and, since beginning the Master degree in Medical Law and Ethics at Glasgow University, have become more aware of his 'personna' within medical ethics. Always lucid, John's papers are for many controversial, since his strong Utilitarian stance is met with much criticism in a field where many people believe duties ought to guide our moral actions.