“Alfred Stieglitz, the famous American photographer and gallery director, once said that a true portrait should be a series of photographs of a person taken at regular intervals ‘between the cradle and the grave’.” ― Alfred Steiglitz, (quoted in Paul Hill, ‘Chapter Five: The Photographer as Witness’, Approaching Photography, 2nd Edition, 2004, Photographers' Institute Press, ISBN 1 86108 323 8, p75)

— Approaching Photography by Paul Hill (Page 75)