Book excerpt: MARTIN LUTHER KING, Jr. and Abraham Joshua Heschel. Their names stand for the quest for justice and equality.Martin grew up in a loving family in the American South, at a time when this country was plagued by racial discrimination. He aimed to put a stop to it. He became a minister like his daddy, and he preached and marched for his cause.Abraham grew up in a loving family many years earlier, in a Europe that did not welcome Jews. He found a new home in America, where he became a respected rabbi like his father, carrying a message of peace and acceptance.Here is the story of two icons for social justice, how they formed a remarkable friendship and turned their personal experiences of discrimination into a message of love and equality for all.