These same beliefs form the basis for Hubbard's "Silent birth" doctrine, which dictates that no words are spoken during the childbirth process. According to a Scientology manual on raising children, a couple should be silent before and after coition. Promiscuity In the 1967 book The Dynamics of Life (originally written circa 1948), Hubbard states that "promiscuity inevitably and invariably indicates a sexual engram of great magnitude. Once that engram is removed, promiscuity can be expected to cease". A footnote then defines promiscuity as "having sexual relations with many people". Hubbard writes in his book The Way to Happiness that if sex is "misused or abused, carries with it heavy penalties and punishments: nature seems to have intended it that way also". In later years, Hubbard sought to distance himself from efforts to regulate the sexual affairs of Scientologists. In a 1967 policy letter, he declared: "It has never been any part of my plans to regulate or to attempt to regulate the private lives of individuals. Whenever this has occurred, it has not resulted in any improved condition... Therefore all former rules, regulations and policies relating to the sexual activities of Scientologists are cancelled." Scientology auditing In an interview with Playboy magazine, Hubbard's estranged son Ronald DeWolf asserted that auditing focused on sex and the individual's sex life, and could later be used as a form of control: "Auditing would address a guy's entire sex life. It was an incredible preoccupation. ... You have complete control over someone if you have every detail of his sex life and fantasy life on record. In Scientology the focus is on sex. Sex, sex, sex. The first thing we wanted to know about someone we were auditing was his sexual deviations. All you've got to do is find a person's kinks, whatever they might be. Their dreams and fantasies. Then you can fit a ring through their noses and take them anywhere. You promise to fulfill their fantasies or you threaten to expose them ... very simple." Scientology's views on the body Hubbard called the physical world MEST (an acronym of "Matter, Energy, Space and Time"), which thetans (souls) temporarily operating "meat bodies" are meant to transcend and conquer. New recruits to the church are often classified as "raw meat" or "raw public". Scientologists refer to their bodies as "meat bodies". Scientology emphasizes attaining "cause over MEST", and attaining the ability to abandon