"It is difficult now to look back across the centuries and appreciate the tremendous impact of his personality on all who knew him. The fire of his eloquence has been quenched in the written words that survive. As a theologian and a controversialist he now appears rigid and a little crude and unkind. But from the day in 1115 when, at the age of twenty-five, he was appointed Abbot of Clairvaux, till his death nearly forty years later he was the dominant influence in the religious and political life of western Europe."