Text: "The same thing may be said as to the force of repulsion, or the centrifugal force, changing to one of gravitation. So that, since the centripetal and centrifugal forces, with relation to the center of force, are continuously undergoing a change, or interchange, the one for and into the other, they can, together, be but modifications of one and the same force, of which the center of force is the key or germ." Walter Russell, Atomic Suicide?; University of Science and Philosophy

See Also:

Source: 159