F.W.J. van Dillen (1932-1991) Franciscus Willem Joannes (Frans) van Dillen (Den Bosch, 1932) took a secondary architectural course in Tilburg before studying at the Academy of Architecture in Amsterdam. Meanwhile, he worked as a draftsman at the offices of J. van der Laan and J. Strik. In 1961, he established himself as an independent architect. Van Dillen belonged to the architects who worked from a critical vision of society. His designs were intended to give people the opportunity to develop individually while creating more cohesion between people. Van Dillen worked from a program of requirements in which a coherent vision of the task was given. Within that socio-functional framework, the design was made. Van Dillen built mainly in the south of the country. Offices, schools, community centers, stores and housing projects in Eindhoven, Oss, Rosmalen and Den Bosch. In 1976, Van Dillen entered into a partnership with Rien Ogier. In the 1980s, Frans van Dillen began to adopt an increasingly radical vision of society. The partnership with Rien Ogier was dissolved in 1985 and Van Dillen founded Participation and Arceosofia. He became a follower of the iatrosopher Pieter de Kok, who radically opposed established society and mainstream medical practice in particular. Van Dillen died in 1991. Note: the oeuvre of F.W.J. van Dillen has not been (completely) inventoried. Education: Secondary architectural education, Tilburg/;Academy of Architecture, Amsterdam/.