In his talks to communities throughout the length and breath of Ireland, John Lonergan finds himself coming back to one theme: the importance of kindness. It is an unexpected theme for the former boss of Ireland's biggest and toughest prison, Mountjoy, but then John Lonergan is an unusual man. John entered the prison service in 1968 and in the years that followed, as he saw human nature at its worst - and often, unexpectedly, at its best - he developed a deep understanding both of human nature and of Irish society. Now, after 42 years in the service, 26 of them as the most senior prison...