“The culture of particular form is approaching its end; the culture of determined relations has begun.” At various occasions, architect Aldo Van Eyck (1918-99) used this quote by Piet Mondrian to express the importance of a specific, relational and above all humanist assertion of architectural form. We lend Van Eyck a voice through curator, writer and architectural historian Christoph Grafe (University of Wuppertal) who wrote a book on Van Eyck’s Amsterdam Orphanage project (1960).