A good insight insights into the one of the greatest minds in photography.
Henri Cartier-Bresson (August 22, 1908 -- August 3, 2004) was a French photographer considered to be the father of photojournalism. He was an early adopter of 35 mm format, and the master of candid photography. He helped develop the street photography or life reportage style that was coined The Decisive Moment that has influenced generations of photographers who followed.
Source (Niels Tacoma Youtube)