His collages were intended to influence the viewer's outlook on life; the technique of using fragments of text and images from various different sources was well suited to achieve the effect Kolář wanted, by showing the destruction and fragmentation of the world Kolář inhabited. Simultaneously, by juxtaposition and contrasting of these different fragments the technique of the collage served to create surprising and visually striking new combinations; for instance, the combination of astronomical maps with Braille writing. Kolář invented or helped to develop new techniques of collage - confrontage, froissage, rollage, chiasmage etc.