U.S. Sen. Barbara A. Mikulski "I extend my deepest sympathies to his family, and the people of South Africa for this loss. But I know that his journey will continue, and justice will persevere. "I join the world in mourning the passing of a visionary leader, Nelson Mandela. He was a tireless champion of justice and peace. His willingness to sacrifice his freedom for the freedom of others was an inspiration to so many -- Senators and South Africans alike. "Nelson Mandela may have fought for freedom in South Africa, but his moral courage brought hope to people all over the world. The world watched as he sought to vanquish the evils of apartheid, was held captive in Robben Island, and became the first black president of a democratic South Africa. Yet his unimaginable struggles accompany incredible achievements. For as Frederick Douglas said, 'If there is no struggle, there is no progress.' "As we celebrate the life of this incomparable man, we recommit ourselves to the cause of freedom and equality. We look ahead at the promise of a brighter future for our children and grandchildren. We have come a long way. Old obstacles have been demolished. The promise of equality and freedom remain within our grasp. But we have a long way to go, and cannot walk the path alone. As Nelson Mandela knew, there is no easy walk to freedom. But he knew we could do it together."