Warren Thomas Farrell is an American educator, activist and author of seven books on men's and women's issues. He came to prominence in the 1970s as one of the leading male thinkers championing the cause of second wave feminism, and serving on the New York City Board of the National Organization of Women. However, when NOW took policy positions that Farrell regarded as anti-male and anti-father, he continued supporting the expansion of women’s options while adding what he felt was missing about boys, men and fathers. He is now recognized as one of the most important figures in the modern men's movement. His books cover twelve fields: history, law, sociology and politics; couples’ communication; economic and career issues; child psychology and child custody; and teenage to adult psychology and socialization. All of his books are related to men's and women studies; consistent to his books since the early 90's has been a call for a gender transition movement.