The Matter of Time enables the spectator to perceive the evolution of the artist's sculpted forms, from his relatively simple double ellipse to the more complex spiral. The final two works in this evolution are built from sections of toruses and spheres to create environments with differing effects on the viewer's movement and perception. Shifting in unexpected ways as viewers walk in and around them, these sculptures create a dizzying, unforgettable sensation of space in motion.
Serra's Matter of Time is organized so that as soon as visitors enter the gallery, they enter the space of the sculpture: The entirety of the room is part of the sculptural field. As with his other multipart sculptures, the artist purposefully organizes the works to move the viewer through them and their surrounding space and to enhance the visual impact of their physicality, the uncertainties of material, and the perceptual fragmentation of the works. The gallery's balcony allows the viewer to overlook the entire field of the gallery, bringing clarity to the overall plan and placement of the sculptures. Guggenheim Bilbao Museum. Bilbao, Euskadi. Spain.