The first articulator of the Law as general principle was Prentice Mulford. Mulford, a pivotal figure in the development of New Thought thinking, discusses the Law of Attraction at length in his essay "The Law of Success", published 1886-1887. In this, Mulford was followed by other New Thought authors, such as Henry Wood (starting with his "God’s Image in Man", 1892), and Ralph Waldo Trine (starting with his first book, "What All the World's A-Seeking", 1896). For these authors, the Law of Attraction is concerned not only about health but every aspect of life.