For this interview, we have chosen to give the floor to two professors of interior design: Graeme Brooker, who is Head of Interior Design at the Royal College of Art (RCA) in London; and Javier Fernández Contreras, who is Head of the Department of Interior Architecture at the Haute École d’Art et de Design (HEAD) in Geneva. Both are therefore employed by art and design schools where this separation from architecture can still be seen. The two men already knew each other and their exchanges reflect this complicity. While Graeme Brooker has always worked in interior design, either in practice or in teaching, Javier Fernández Contreras trained as an architect. In addition to his tenure as a professor, he maintains a foothold in practice. One from a rather Nordic tradition, the other Latin, both insist on the importance of practice in their approach to teaching. Their considerations also emphasize the topicality of their discipline: more than ever we are asking questions about how to treat the interior. In the course of their conversation, these teachers highlighted the issues at stake in their field. They spoke about the relationship between architecture and interior design, and explained how, during the 20th century, interior design gradually freed itself from architecture to become a subject of study and a practice in its own right. We hope this interview will have given us a better understanding of what is important for the discipline and what is worth remembering for future generations. Far from mere decoration, interior design is seen by both Brooker and Contreras as a fundamental act that responds to human needs for housing, protection and shelter. Combined with the decrease in available space, population growth makes the interior all the more important. In their teaching, both professors strive to convey these essential notions to their students.