Henri Cartier-Bresson, one of the world's greatest photographers, put down his camera nearly 30 years ago after capturing some of the 20th century's greatest historical moments and figures. I personally think he is one of the greatest photographers ever. His vision and anticipation of unfolding events makes him so. I normally work in the studio and not on the streets where he made his name. NPR's Susan Stamberg visits the 94-year-old legend in Paris, where a retrospective is on display. See his photos online.