17 Rainer makes clear her interest in the generic structures of the emotions in a letter to Nan Piene following a screening of  Lives of Performers. She writes: “the more I get into it the more I see how such things as rage, terror, desire, conflict, et al., are not unique to my experience the way my body and its functioning are.” Yvonne Rainer, Work 1961-73 (Halifax: The Press of the Nova Scotia College of Art and Design, 1974), p. 238.