It may be important to note that the spiritual literature left for posterity by Sri Aurobindo and the Mother cannot be compared with other books even they claim to carry Their work forward. First of all, the answers from Sri Aurobindo and the Mother are not only comprehensive in terms of the spiritual knowledge and wisdom, but are also loaded with the power of their consciousness. They not only instruct but awaken, not only advice but inspire, not only tell us what should be done but give us the power to do it. Such books take birth once in thousands of years and cannot be replicated even by the best of disciples. This is especially true for Savitri and Prayers and Meditations, which are imbued with the occult power of the authors and mere reading of them means engaging in the yoga. Nothing else is than needed, and these books alone can become living guides to take us through the tremendous journey of yoga. They create in the seeker a ground of consciousness like the mantras of old, that draw forces of transformation into the consciousness of the sadhaka while keeping away all that comes to deform, pervert or distract him or her away from the path. In fact, they are a living mantra and to read these books with quietude and trust and conscious aspiration is to practice mantra sadhana which is indeed regarded as one of the highest and simplest forms of yoga. Books like the Gita, the Upanishads, the Vedas continue to awaken and inspire the seekers thousands of years after they have been written. One can imagine the long-lasting impact of books like Savitri, that have been given to humanity to help in the transformation. Savitri is the mantra of transformation as the Mother puts it. It is surely not only a non-replicable but also an irreplaceable scripture, if scripture we can call it. This Word-Sound body of Sri Aurobindo and the Mother that contains their dynamic consciousness is enough to take us through the ocean of life in the ship of yoga.
As for the intellect it is indispensable to man up to a certain point; after that it becomes an inferior instrument and often misleading and obstructive.
About Savitri | B1C3-08 The New Life (pp.28-29)