He subsequently alters his view considering repetition compulsion of the ego instincts
, which he later calls death instincts, and adds, one "can predicate a conservative, or rather retrograde, character responding to a compulsion to repeat" (44).
His first works were influenced largely by avant-garde theater, and he only gradually refined his dance aesthetics to the metaphoric expressiveness of pure movement, which can reveal the deepest ego instincts
. He frequently finds inspiration in the world of ancient Greek tragedy, with its mystery and passion.