 Stein also maintains that human beings are “beings in the world” (2000c: 155[177]). Persons are integrated into both the material and the immaterial, spiritual worlds (1931: 147[221]): “The being of human beings is a composite of body, soul, and spirit” (1950/2006: 310[363]). Humans are necessarily embodied; the soul is “bound to matter” (stoffgebunden; 1950/2006: 321[377]). Human spirits exhibit “being-tied-to-the-body” (Leibgebundenheit; 1950/2006: 333[392]). Following Aristotle, she maintains that the body receives its vitality through the soul (2000c: 86[94]). For Stein, the soul is the principle of formation, animateness, nutrition, and reproduction. The soul, furthermore, grows primarily from its affective nature; he soul is conditioned by the body, but the spirit can also condition and curb the emotions. In humans, the spirit is dependent on the senses for its natural activity. “The soul cannot live without receiving” (Stein 1950/2006: 318[373]). Human persons as spirits are intentionally influenced and formed “from above”(i.e., from purely spiritual motivations) and also “from below” (1950/2006: 310[364]), i.e., from bodily drives. Spirit arises from a “dark ground”, an “obscure depth” (1950/2006: 310[364]).