Among many others, he portrayed Winston Churchill (shown here), Pablo Picasso, Ernest Hemingway, Albert Einstein, LinkMartha Graham, and Fidel Castro.
He had a very unique way of photographing, and payed much attention to each and every shoot.
I leave you with his words:
Within every man and woman a secret is hidden, and as a photographer it is my task to reveal it if I can. The revelation, if it comes at all, will come in a small fraction of a second with an unconscious gesture, a gleam of the eye, a brief lifting of the mask that all humans wear to conceal their innermost selves from the world. In that fleeting interval of opportunity the photographer must act or lose his prize.