the centripetal and the centrifugal forces, one very quickly discovers the confusion which emerges

from their separation. This confusion becomes even greater if the separation is mentioned in

relation to gravitation; gravitation, also called attraction, then seems to be the same as centripetal

force, the law of this individual force is taken as the law of the whole of gravitation, and the

centrifugal force, which at another time is valued as thoroughly essential, is viewed as something

quite superfluous.-In the above proposition, which contains the immediate idea of gravitation,

gravity itself namely, as the concept, which shows itself in the particularity of the body through the

external reality of motion, the rational identity and inseparability of these two moments are