Harmony is the natural rule of the Spirit, it is the inherent law and spontaneous consequence of unity in multiplicity, of unity in diversity, of a various manifestation of oneness. In a pure and blank unity there could be indeed no place for harmony, for there is nothing to harmonise; in a complete or a governing diversity there must be either discord or a fitting together of differences, a constructed harmony. But in a gnostic unity in multiplicity the harmony would be there as a spontaneous expression of the unity, and this spontaneous expression presupposes a mutuality of consciousness aware of other consciousness by a direct inner contact and interchange. In infrarational life harmony is secured by an instinctive oneness of nature and oneness of the action of the nature, an instinctive communication, an instinctive or direct vital-intuitional sense-understanding by which the individuals of an animal or insect community are able to co-operate.
In human life this is replaced by understanding through sense-knowledge and mental perception and communication of ideas by speech, but the means that have to be used are imperfect and the harmony and cooperation incomplete. In a gnostic life, a life of superreason and supernature, a self-aware spiritual unity of being and a spiritual conscious community and interchange of nature would be the deep and ample root of understanding: this greater life would have evolved new and superior means and powers of uniting consciousness inwardly with consciousness; intimacy of consciousness communicating inwardly and directly with consciousness, thought with thought, vision with vision, sense with sense, life with life, body-awareness with body-awareness, would be its natural basic instrumentation. All these new powers taking up the old outward instruments and using them as a subordinate means with a far greater power and to more purpose would be put to the service of the self-expression of the Spirit in a profound oneness of being and life. The Life Divine by Sri Aurobindo
Book 2 - Part 2 - Chapter 2-28 The Divine Life intyoga.online.fr