Consciousness is discussed in scientific terms. Conscious beings can change their own momentum and the momentum of other objects and beings. Conscious beings are proposed to be the instigators of all forces. Wherever forces exist, conscious beings exist. Force, mass, and energy are all manifestations of the willful conscious behaviors of conscious beings. Conscious beings exist in the nuclear, atomic-molecular, biological, and astronomical space-time realms. Consciousness is proposed to ultimately be all that exists.