John Gray

John Gray (born December 28, 1951) is an American relationship counselor, lecturer and author. In 1969, he began a nine-year association with Maharishi Mahesh Yogi before beginning his career as an author and personal relationship counselor. In 1992 he published the book Men Are from Mars, Women Are from Venus, which became a long-term best seller and formed the central theme of all his subsequent books and career activities. His books have sold millions of copies.

Source: John Gray on Wikipedia