As a Man Thinketh is a literary essay of James Allen. The title is influenced by a verse in the Bible from the Book of Proverbs chapter 23 verse 7, "e;As a man thinketh in his heart, so is he."e; The book opens with the statement: Mind is the Master power that moulds and makes, And Man is Mind, and evermore he takes The tool of Thought, and, shaping what he wills, Brings forth a thousand joys, a thousand ills: - He thinks in secret, and it comes to pass: Environment is but his looking-glass. James Allen (November 28, 1864-1912) was a British philosophical writer known for his inspirational books and poetry and as a pioneer of the self-help movement. His best known work, As a Man Thinketh, has been mass produced since its publication in 1903. It has been a source of inspiration to motivational and self-help authors.