That is why Sri Aurobindo says in the last paragraph of this chapter that the kind of synthesis that we need is unprecedented. A total synthesis of all the parts of the being, of all aspects of reality, of all the methods of Yoga, and achievement not only of human perfectibility but even surpassing of humanity. To emphasize that human problems of today cannot be resolved even by human perfection. You require a new kind of perfection – supramental perfection. This is the need. So when we are trying to make a preparation for that great synthesis, in that process, our understanding of the Gita will play a major role. It is not as if the study of the Gita is enough; the study of the Gita will give you a kind of a key which will be extremely important. In fact towards the end of the book, Sri Aurobindo says it is not as if all the solutions that you are looking for are in the Gita, but the central key is there, and we must find out what is this central key, uttamam rahasyam, that is there in the Bhagavad Gita (Chap. IV, n°.3). And unless you discover that uttamam, that supreme secret, you will not be able to make the kind of synthesis that we want to have. Let us now read these last two paragraphs of this chapter, page 7-8, or 9 according to your books.
"There have been other syntheses in the long history of Indian thought. We start with the Vedic synthesis of the psychological being of man in its highest flights and widest rangings of divine knowledge, power, joy, life and glory with the cosmic existence of the gods, pursued behind the symbols of the material universe into those superior planes which are hidden from the physical sense and the material mentality. The crown of this synthesis was in the experience of the Vedic Rishis something divine, transcendent and blissful in whose unity the increasing soul of man and the eternal divine fullness of the cosmic godheads meet perfectly and fulfil themselves. The Upanishads take up this crowning experience of the earlier seers and make it their starting-point for a high and profound synthesis of spiritual knowledge; they draw together into a great harmony all that had been seen and experienced by the inspired and liberated knowers of the Eternal throughout a great and fruitful period of spiritual seeking. The Gita starts from this Vedantic synthesis and upon the basis of its essential ideas builds up another harmony of the three great means and powers, Love, Knowledge and Works, through which the soul of man can directly approach and cast itself into the Eternal. There is yet another, the Tantric, which though less subtle and spiritually profound, is even more bold and forceful than the synthesis of the Gita, - for it seizes even upon the obstacles to the spiritual life and compels them to become the means for a richer spiritual conquest and enables us to embrace the whole of Life in our divine scope as the Lila [cosmic play] of the Divine; and in some directions it is more immediately rich and fruitful, for it brings forward into the foreground along with divine knowledge, divine works and an enriched devotion of divine Love, the secrets also of the Hatha and Raja Yogas, the use of the body and of mental askesis for the opening up of the divine life on all its planes, to which the Gita gives only a passing and perfunctory attention. Moreover it grasps at that idea of the divine perfectibility of man, possessed by the Vedic Rishis but thrown into the background by the intermediate ages, which is destined to fill so large a place in any future synthesis of human thought, experience and aspiration."
"We of the coming day stand at the head of a new age of development which must lead to such a new and larger synthesis. We are not called upon to be orthodox Vedantins or any of the three schools or Tantrics or to adhere to one of the theistic religions of the past or to entrench ourselves within the four corners of the teaching of the Gita. That would be to limit ourselves and to attempt to create our spiritual life out of the being, knowledge and nature of others, of the men of the past, instead of building it out of our own being and potentialities. We do not belong to the past dawns, but to the noons of the future. A mass of new material is flowing into us; we have not only to assimilate the influences of the great theistic religions of India and of the world and a recovered sense of the meaning of Buddhism, but to take full account of the potent though limited revelations of modern knowledge and seeking; and, beyond that, the remote and dateless past which seemed to be dead is returning upon us with an effulgence of many luminous secrets long lost to the consciousness of mankind but now breaking out again from behind the veil. All this points to a new, a very rich, a very vast synthesis; a fresh and widely embracing harmonisation of our gains is both an intellectual and a spiritual necessity of the future. But just as the past syntheses have taken those which preceded them for their starting-point, so also must that of the future, to be on firm ground, proceed from what the great bodies of realised spiritual thought and experience in the past have given. Among them the Gita takes a most important place.
Our object, then, in studying the Gita will not be a scholastic or academical scrutiny of its thought, nor to place its philosophy in the. history of metaphysical speculation, nor shall we deal with it in the manner of the analytical dialectician. We approach it for help and light and our aim must be to distinguish its essential and living message, that in it on which humanity has to seize for its perfection and its highest spiritual welfare."