The author discusses how sexuality on the one hand develops and changes during childhood, but on the other hand, holds onto the old residues of different, earlier phases. In adult sexuality, there always remain enigmatic, regressive, even borderline emotions and feelings from earlier experiences. These residues make sexuality incomprehensible and primitive, but also offer possibilities for dreams, fantasies and creativity later in life. Autoerotic fantasies, object fantasies, enigmatic knowledge, sexuality fantasies and creative thinking are realised via these developmental residues.