«Because of his vision of the Mundaneum and the Cité Mondiale, Otlet is often considered as a utopian, visionary thinker. […] It is necessary to emphasize however that, althoughthe work of Otlet is characterized by the authors mentioned above as visionary or utopian, Otlet himself never considered his concrete endeavours to be utopian in the sense of unrealistic, although he did on different occasions relate his more visionary schemes to a utopian mode of thought.»
Wouter van Acker