"The performance is the main thing, but when it is over, there are a number of subordinate pieces which may be isolated, souvenirs, residual objects. To pick up after a performance, to be very careful about what is to be discarded and what still survives by itself. Slow study and respect for small things. One's own created 'found objects.' The floor of the stage is like the street. Picking up after is creative. Also the particular life of objects must be respected." --Oldenburg, 1962