With the term Raumplastik the artist himself used to characterize his work. Connecting the terms ‘space’ and ‘sculpture’ seems perfectly natural for this art genre, but the relationship takes on a surprisingly new form in Kricke’s work. He no longer conveys space directly, in other words in a traditional, Euclidian way via volume, but as a function of movement in time, by analogy with modern scientific insights. Put in another way: here space no longer needs a three-dimensional core as a communicating medium, but is revealed directly and vividly through force vectors, through lines of movement. His sculptures’ lines are not seen as a closed graphic system, but reflect people’s movement in the space. The lines serve as a vehicle for activating the eye and the sensibilities. “My problem is not mass, is not figure, but it is space and it is movement—space and time. I do not want real space or real movement (mobiles), I want to represent movement. I try to endow the unity of space and time with form.” (N.K.)