In the previous stages of the evolution Nature's first care and effort had to be directed towards a change in the physical organisation, for only so could there be a change of consciousness; this was a necessity imposed by the insufficiency of the force of consciousness already in formation to effect a change in the body. But in man a reversal is possible, indeed inevitable; for it is through his consciousness, through its transmutation and no longer through a new bodily organism as a first instrumentation that the evolution can and must be effected. In the inner reality of things a change of consciousness was always the major fact, the evolution has always had a spiritual significance and the physical change was only instrumental; but this relation was concealed by the first abnormal balance of the two factors, the body of the external Inconscience outweighing and obscuring in importance the spiritual element, the conscious being. But once the balance has been righted, it is no longer the change of body that must precede the change of consciousness; the consciousness itself by its mutation will necessitate and operate whatever mutation is needed for the body. It has to be noted that the human mind has already shown a capacity to aid Nature in the evolution of new types of plant and animal; it has created new forms of its environment, developed by knowledge and discipline considerable changes in its own mentality. It is not an impossiblity that man should aid Nature consciously also in his own spiritual and physical evolution and transformation. The urge to it is already there and partly effective, though still incompletely understood and accepted by the surface mentality; but one day it may understand, go deeper within itself and discover the means, the secret energy, the intended operation of the Consciousness-Force within which is the hidden reality of what we call Nature.

        All these are conclusions that can be arrived at even from the observation of the outward phenomena of Nature's progression, her surface evolution of being and of consciousness in the physical birth and the body. But there is the other, the invisible factor; there is rebirth, the progress of the soul by ascent from grade to grade of the evolving existence, and in the grades to higher and higher types of bodily and mental instrumentation. In this progression the psychic entity is still veiled, even in man the conscious mental being, by its instruments, by mind and life and body; it is unable to manifest fully, held back from coming to the front where it can stand out as the master of its nature, obliged to submit to a certain determination by the instruments, to a domination of Purusha by Prakriti. But in man the psychic part of the personality is able to develop with a much greater rapidity than in the inferior creation, and a time can arrive when the soul-entity is close to the point at which it will emerge from behind the veil into the open and become the master of its instrumentation in Nature. But this will mean that the secret indwelling spirit, the Daemon, the Godhead within is on the point of emergence; and, when it emerges, it can hardly be doubted that its demand will be, as indeed it already is in the Mind itself when it undergoes the inner psychic influence, for a diviner, a more spiritual existence. In the nature of the earth-Iife where the Mind is an instrument of the Ignorance, this can only be effected by a change of consciousness, a transition from a foundation in Ignorance to a foundation in Knowledge, from the mental to a supramental consciousness, a supramental instrumentation of Nature.

Sri Aurobindo