"...From these two roots gradually grew his definition of what makes an exceptional image, the "decisive moment" - the name given to a major collection of his work in 1952. The "decisive moment", he said, was "the simultaneous recognition, in a fraction of a second, of the significance of an event as well as the precise organisation of forms which give that event its proper expression".

http://www.guardian.co.uk/media/2004/aug/05/pressandpublishing.henricartierbresson

Para ser sutil hay que trabajar duro