I maintain that every therapist operates out of a “philosophy of treatment” that is not always conscious. Every interpretation made or not made is rooted in such a philosophy. I then consider my own approach in 14 points. In the second part, two cases are discussed. The case of Frank's perversion is understood as a defensive identification with two parents, themselves perverts, and particularly a mother who stimulated his incestuous wishes by jointly looking at pornography. In Laura's case, the father's assuming maternal functions encouraged a permanent fixation at the oral level. In both cases, I argue in favor of a more encompassing interpretation than those made by the original authors.