Body, life and mind are the lower triple world that man has largely climbed, up to the rational mind.
Beyond the Rational mind, there is the Spiritual mind comprising of the faculties of inspiration, illumination, revelation, intuition. This is also sometimes referred to as the higher consciousness. This Spiritual mind or higher consciousness has steps through which man can climb to the Supermind. The Spiritual mind is not ignorant like the lower triple worlds that includes the Rational mind. Yet the knowledge that begins to dawn from the Higher Mind onwards through the Illumined and Intuitive Mind right up to the Overmind still belongs to the old creation. Though these higher ranges open doors to true knowledge of the ONE and have various degrees of Power, yet they do not have the final key that can reconcile World and God. They can lead us out of the multiplicity into the unity of God but not the reconciliation of the two. They do not hold the ultimate secret of manifestation.
This reconciliation of unity and multiplicity, Creator and Creation is only in the Supermind. The worlds from Supermind onwards are regarded as the Higher worlds, unfallen worlds of pure Truth and unmixed bliss. The New Creation begins with the Supermind. All below it including the splendour of the Overmind belongs to the old Creation as the perfect perfection is missing there.
About Savitri | B1C3-11 Towards Unity with God (pp.31-33)