Principles may refer to:

Jack Canfield (born August 19, 1944) is an American motivational speaker and author. He is best known as the co-creator of the Chicken Soup for the Soul book series, which currently has nearly 200 titles and 112 million copies in print in over 40 languages. According to USA Today, Chicken Soup for the Soul and several of the series titles by Canfield and his writing partner, Mark Victor Hansen, were among the top 150 best-selling books of the last 15 years (October 28, 1993 through October 23, 2008).

In July 2004, Jack Canfield founded the Transformational Leadership Council, a group of thought leaders, speakers, authors, coaches, trainers, researchers, consultants, and other leaders in the fields of personal and professional development. The members of TLC meet semi-annually to network, connect, and learn from each other, to enhance members' effectiveness and contribution in the world. So far, semi-annual meetings have been held in USA, Canada, Bermuda and Mexico. As of January 2012, membership numbered 120.

Ralph Steiner (February 8, 1899 – July 13, 1986) was an American photographer, pioneer documentarian and a key figure among avant-garde filmmakers in the 1930s.

Born in Cleveland, Steiner studied chemistry at Dartmouth, but in 1921 entered the Clarence H. White School of Modern Photography. White helped Steiner in finding a job at the Manhattan Photogravure Company, and Steiner worked on making photogravure plates of scenes from Robert Flaherty's Nanook of the North. Not long after, Steiner's work as a freelance photographer in New York began, working mostly in advertising and for publications like Ladies' Home Journal. Through the encouragement of fellow photographer Paul Strand, Steiner joined the left-of-center Film and Photo League around 1927. He was also to influence the photography of Walker Evans, giving him guidance, technical assistance, and one of his view cameras.

In 1929, Steiner made his first film, H2O, a poetic evocation of water that captured the abstract patterns generated by waves. Although it was not the only film of its kind at the time -- Joris Ivens made Regen (Rain) that same year, and Henwar Rodekiewicz worked on his similar film Portrait of a Young Man (1931) through this whole period —- it made a significant impression in its day and since has become recognized as a classic: H2O was added to the National Film Registry in December 2005. Among Steiner's other early films, Surf and Seaweed (1931) expands on the concept of H2O as Steiner turns his camera to the shoreline; Mechanical Principles (1933) was an abstraction based on gears and machinery.