 A rejection of any attempt to define the human being is a rejection of the traditional attempt in philosophy to think of the human being as a substance. Scheler describes the human being not as a substance, but as the meeting point of two distinct movements (GW IX, 70). These movements are life-urge (Lebensdrang) and spirit (Geist). The distinction between these two movements follows the distinction between the real and the ideal factors introduced in the sociology of knowledge. It is only in the human being that life and spirit find themselves in a process of becoming unified. In the human being, life becomes spiritualized and spirit becomes vitalized and embodied. Every act of the human being participates in this dual process, a process that is never completed, but is recreated in every new act. Either this process participates in the realization of the deeper, spiritual values, or it is a movement toward bestialization, a realization of the more shallow and superficial values.