 Is there room for these distinctive features within the different theories of persistence? It has been suggested that only endurantists can justify our willingness to make sacrifices for our future selves, to act upon the plans formulated by our past selves, and to rely upon the evidence gathered by our past selves . The idea is that these activities make sense only if a present person is identical to her past and future selves. Perdurantists may respond in one of two ways. First, they may argue that it is the whole, identical, four-dimensional person who makes sacrifices, acts upon plans and reasons from evidence, via the activities of her temporal parts. Alternatively, they may accept that it is short-lived temporal parts which act, sacrifice and reason, but that past- and future-regarding actions can be justified by the intimate relations between distinct temporal parts of the same person. Stage theorists must take this second route, for they claim that the person just is a brief stage, who takes responsibility for the actions of her past counterparts, and acts to benefit her future counterparts.