The first essential equipment for a right journey through the country of sexual experience is that we should know the truth about our bodies —those temples of the Holy Ghost—and should understand the meaning of the emotions and desires which connect themselves with our physical constitution. Further, because the problem of sex can only be solved by the cooperation of the sexes working together in mutual understanding it is right that men should know a good deal about women's bodies and vice versa. Such knowledge almost always begets sympathy and a certain intelligent tenderness. The lack of it has often led to unconscious cruelties, to misunderstandings, and even to serious mistakes