Quoth the Wikipedia:
Cartier-Bresson is considered to be the father of modern photojournalism. He was one of the first serious photographers to shoot in the smaller 35mm format, and is commonly considered the undisputed master of candid photography using the 35mm rangefinder camera. He helped to develop the "street photography" style that influenced generations of photographers to come.
A must view if you haven’t! Thanks for the head’s up.