The material organism functions solely by means of the immaterial wesen, the life force.
The material organism, thought of without life force, is capable of no sensibility, no activity, no self-preservation. (62) It derives all sensibility and produces its life functions solely by means of the immaterial wesen (the life principle, the life force) that enlivens the material organism in health and in disease.
62 Without life force, the material organism is dead and is only subject to the power of the physical external world. It decays and is again resolved into its chemical constituents.