He is revered as the man who made the classic rags-to-riches transformation, the son of a poor Scottish weaver who became the world's richest man then gave away his fortune to help those less fortunate.
Andrew Carnegie became known as the "father of philanthropy" after making his millions in the American steel industry of the 19th century. By his death he had given away more than $350m and set up over 2,800 public libraries.
But the man whose motto was "the man who dies rich dies disgraced" had a dark side and was capable of ruthlessness and cruelty, according to a new book. Read more from The Scotman