Prince Charles shook the hand of Sinn Féin leader Gerry Adams this week in a small step on a long road, but one welcomed by the founder of The Forgiveness Project In 2006, in an inaugural paper for a series of essays on civilisation and ­reconciliation, Prince Charles wrote: “I know only too well how one’s faith can be challenged, having lost a much-beloved great-uncle, Lord Mountbatten, in an IRA terrorist attack in 1979. But I remember how it gradually dawned on me that thoughts of vengeance and hatred would merely prolong the terrible law of cause and effect and continue an unbroken cycle of violence.”This week, 36 years after the bomb blast that killed four people, Prince Charles visited for the first time the site in Mullaghmore ­village, Co. Sligo,