The Neutral Centers command or dominate all other states or conditions and are the fulcrum of the lever for creating change. Neutral Centers are condensed focused Mind possessing higher power and higher density than their surrounding uncondensed Etheric substances.
"All expressions of energy spring from rest, seek a point of rest and return to a condition of rest. The power of a moving lever is not in the lever nor in its motion. It is in the stillness of its fulcrum from which it borrows its ability to manifest the power of the fulcrum." [Russell, The Secret of Light]
All matter (condensed Mind) is desirous of sympathetic association to a dominating center. This power over distant matter is called gravity and the form of gravity that exerts its activating influence at a distance Keely called gravism. In human activity this dynamic would be called Animal Magnetism.
"Gravity is nothing more than a concordant attractive sympathetic stream flowing towards the neutral centerof the earth. This force is inherent in all visible and invisible aggregated forms of matter, from the very birth of a planet, around whose center the molecules cluster by the sympathetic affinity which is thus induced." [Keely in The Snell Manuscript]
The condition known as gravity then is an embodiment of the Law of Attraction (harmonic vibrations/oscillations as per or as in the Bjerknes Effect). These sympathetic streams assimilate each other in a centripetal motion to a center. These streams Russell referred to as the Father Force in activity and are the same as Keely's Celestial Force or syntropy. We may then conclude all matter is a combination or assimilation of these centering forces held in abeyance by their very vibratory natures. All forms of matter have this characteristic and exert it according to their densities. Density being an effect of rhythmic (predominantly) syntropic activities.