The 25 Most Powerful Women of the Past Century

Her iconic white garb with its blue stripe trim is now equated with her ideals of service and charity among "the poorest of the poor." Born Agnes Bojaxhiu to Albanian parents living under the Ottoman Empire, the petite nun made her way to India in 1929, building her start-up missionary community of 13 members in Kolkata (formerly Calcutta) into a global network of more than 4,000 sisters running orphanages and AIDS hospices. Sometimes criticized for lacking adequate medical training, not addressing poverty on a grander scale, actively opposing birth control and abortion and even cozying up to dictators, the winner of the Nobel Peace Prize nonetheless inspired countless volunteers to serve, and will wear her white habit all the way to Catholic sainthood.

See a trove of rare Mother Teresa photos.