...is the persistence of force. It is the basis of experience, and must, therefore, be the scientific basis of any scientific organization of experiences....brings us down ; and on this a rational synthesis must build up. By the indestructibility of matter we mean the indestructibility of the force with which...

...high authority of their discoverers. It is only by reactions that existence becomes manifest; for, "the sole truth which transcends experience by underlying it is thus the persistence of force." (Spencer). Inorganic existence might be considered as the sum total of reactions between the variations...

...evolution. In his own words, " The phenomena of evolution have to be deduced from the persistence of force. To this an ultimate analysis brings us down ; and on this a rational synthesis must build up." 2 A fuller expression of the same idea is as follows : " Given the persistence of force,...