Still were they far from scientific proof of the eternal unity and individuality of the soul. They had reasoned out in accordance with all the axioms of their science the indestructibility of energy, and the rising untransformability of the higher types of energy; they had also reasoned out as certainly that mediums of energy had stability of equilibrium proportionate to the refinement of the energy travelling through them, and that thus the soul was nearer to everlasting persistence as a unity than any medium they scientifically knew. But that on its escape from the body it continued for ever as an individuality they could only assume; they could not prove it. They shrank from the idea that it was for ever past transformation; for that meant the eternal continuance of the last stage of life. It was indeed contrary to all the results of their scientific investigations to think that any type of energy or medium could at any time cease to change, that is, to improve or degenerate. Perpetual transformation was, as far as they had been able to search, the universal law: it might be into a higher or more stable form, or into a lower or more material form, but onwards must every energy move. The higher it went, the less did it tend to fall back. The law of eternal advance was surer in its action in the higher ranges of existence. And the whole effort of Limanoran life was to purify and ennoble the energy that was in it. For, reasoning on the analogy of all the nature they knew, they had little doubt that the platform they reached by the end of their terrene life was the platform from which their enfranchised energy or individuality, whichever it was, started on its new career.