An aesthetics of the ugly? And why not? Aesthetics has become a collective term for a large group of concepts, which can be divided into three specific classes. One of these deals with the idea of the beautiful, the second with the concept of its production, that is, with art, and the third with the system of the arts, with the representation of the idea of the beautiful through art in a specific medium. The concepts belonging to the first class are often summarized under the title of the metaphysics of beauty. However, when the idea of beauty is examined, the investigation of the ugly is inseparable from it. The concept of the ugly, as the negative beautiful, thus forms a part of aesthetics. There is no other science to which it could be assigned, and it is therefore correct to speak of the aesthetics of the ugly.