Since this law is so universal throughout physical nature, the doctrine of continuity affords every ground for supposing that its analogue holds good in respect of spiritual nature. We must never lose sight of the old-world saying that "a truth on one plane is a truth on all." If a principle exists at all it exists universally. We must not allow ourselves to be misled by appearances; we must remember that the perceptible results of the working of any principle consist of two factors--the principle itself or the active factor, and the subject-matter on which it acts or the passive factor; and that while the former is invariable, the latter is variable, and that the operation of the same invariable upon different variables must necessarily produce a variety of results. This at once becomes evident if we state it mathematically; for example, _a_, _b_ or _c_, multiplied by _x_ give respectively the results _ax_, _bx_, _cx_, which differ materially from one another, though the factor _x_ always remains the same. This law of the generation of power by attraction applies on the spiritual as well as on the physical plane, and acts with the same mathematical precision on both; and thus the human individuality consists, not in the mere aggregation of its parts, whether spiritual or corporeal, but in the _unity_ of power resulting from the intimate association into which those parts enter with one another, which unity, according to this law of the generation of power by attraction, is infinitely superior, both in intelligence and power, to any less fully integrated mode of spirit. Thus a natural principle, common alike to physical and spiritual law, fully accounts for all claims that have ever been made for the creative power of our thought over all things that come within the circle of our own particular life. Thus it is that each man is the centre of his own universe, and has the power, by directing his own thought, to control all things therein. But, as I have said above, there is no reason why this principle should not be recognised as expanding from the individual until it embraces the entire universe. Each man, as the centre of his own world, is himself centred in a higher system in which he is only one of innumerable similar atoms, and this system again in a higher until we reach the supreme centre of all things; intelligence and power increase from centre to centre in a ratio rising with inconceivable rapidity, according to the law we are now investigating, until they culminate in illimitable intelligence and power commensurate with All-Being.