The Person Behind the Quote--
Steven Pressfield (born September 1943 in Port of Spain, Trinidad) is an American novelist and author of screenplays, principally of military historical fiction set in classical antiquity.
His epic novel Gates of Fire is required reading at the U.S. Military Academy and the Virginia Military Institute, and according to the L.A. Times, "has achieved cult status among Marines.
Pressfield served in the United States Marine Corps in the 1960s, and later graduated from Duke University.
(The above are excerpts from Pressfield's Wikipedia page: http://en.wikipedia.org/wiki/Steven_Pressfield. To learn more of what Pressfield is doing currently, go to his website http://www.stevenpressfield.com/ . He has written a book for writers called The War of Art: Break Through the Blocks and Win Your Creative Battles. It looks interesting!)