Inwardness and true quietness appear to be but two aspects of the same thing -- of a "truly centered" life. In the innermost religion of life there is a perpetual calm; perturbations and excitements belong to the comparatively superficial part of our own nature. In cleaving to the Center we cannot but be still; to be inwardly still is to be aware of the Center.
Each of us is a soul. We have been told that we "have" a soul, but that's not the same thing. To have a soul would indicate that we are primarily an ego or a personality that in some way "possesses" a soul. Our essence IS the soul and all aspects of ego and personality flow from that essence. At its core the soul is pure, but habits, tendencies, and imbalances often obscure some of that inner light. Our spiritual work is to correct whatever shortcomings may be preventing the light of our sould from shining through.