Kirsty Young's castaway is Mary Robinson, former President of Ireland and ex-UN Commissioner for Human Rights.
Her professional life has been defined by public service at the very highest level and she appears the epitome of the cool-headed pragmatist. And yet she is also something of an enigma: a committed Catholic who fought hard to legalise contraception and divorce; an elected head of state with both a noble bearing and a common touch.
As a lawyer she lead from the front championing controversial causes at home in Ireland and fiercely defending human rights at the UN. She also has a habit of making history - she was Ireland's first female president and the first Irish Head of state to meet Her Majesty the Queen at Buckingham Palace.
She says of her life and work "over the years I have given many talks and taken part in many discussions on leadership: women's leadership, political leadership, business leadership, grass roots leadership. But the element of leadership that really fascinates me is moral leadership."
Producer: Cathy Drysdale.