For her work among the poor and dying of India, Mother Teresa of Calcutta (1910-1997) won the Nobel Prize for Peace in 1979.

Mother Teresa of Calcutta, a Roman Catholic nun who founded the only Catholic religious order still growing in membership, was born Agnes Gonxha Bojaxhiu in Skopje, Yugoslavia, on August 27, 1910. Her parents were Albanian grocers, and at the time of her birth Skopje lay within the Ottoman Empire. She attended public school in Skopje, and first showed religious interests as a member of a school sodality that focused on foreign missions. By the age of 12 she felt she had a calling to help the poor.

This calling took sharper focus through her teenage years, when she was especially inspired by reports of work being done in India by Yugoslav Jesuit missionaries serving in Bengal. When she was 18 Mother Teresa left home to join a community of Irish...