“There is no other way than this.” By this expression it is not intended that Karmayoga is the only path of salvation for all men, but that the renunciation of desire is essential to salvation; every Yogin, be he Jnani, Bhakta, or Karmi, must devote whatever work he may be doing to the Eternal. To the Karmayogin indeed this path is the only possible way; for it is the swabhava or nature of a man which decides the way he shall take. If a born Jnani becomes the disciple of a great Bhakta, however submissively he may accept his Master’s teachings, however largely he may infuse his Jnana with Bhakti, yet eventually it is the way of Jnana he must take and no other. For that is his swabhava or nature, his dharma or the law of his being. If the Brahmin predominates in him, he will be drawn into Jnana; if the Kshatriya, into works; if the Sudra or Vaisya, the child or woman, to Bhakti. If he is born saint or avatar, he will harmonize all three, but still with one predominant over the others and striking the main note of his life and teaching. It is always the predominance of one or other,not its unmixed control, which decides the path; for as with the Karmayogin, the devotion of works to God brings inevitably the love of God, and love gives knowledge, so it is with the Bhakta;the love of God will of itself direct all his works to God and bring him straight to knowledge. So it is even with the Jnani; the knowledge of the Brahman means delight in Him, and that is Bhakti; and this love & knowledge cannot let him live to himself but will make him live to Brahman, and that is divine Karma. The three paths are really one, but the Jnani takes the right hand, the Bhakta the left hand and the Karmayogin walks in the middle; while on the way each prefers his own choice as best and thinks the others inferior, but when they reach the goal,they find that none was inferior or superior, but it was one road they were following which only seemed to be three.
The Jnani & Bhakta shrink from the idea of Karma as a means of salvation. Unillumined Karma is such a stumbling block in the path of the seeker that they can hardly regard even illumined & desireless Karma as anything but a subordinate discipline whose only value is to prepare a man for Bhakti or Jnan. They will not easily concede that karma can be by itself a direct and sufficient road to Brahman. So Shankaracharya disparages karma, and Shankaracharya’s is an authority which no man can dare to belittle. Nevertheless even the greatest are conditioned by their nature, by the times they work in and by the kind of work they have come to do. In the age that Shankara lived in, it was right that Jnana should be exalted at the expense of works. The great living force with which he had to deal, was not the heresies of later Buddhism, Buddhism decayed and senescent, but the triumphant Karmakanda which made the faithful performance of Vedic ceremonies the one path and heaven the highest goal. In his continual anxiety to prove that these ceremonies could not be the path, he bent the bow as far as he could in the other direction and left the impression that works could not be the path to salvation at all. Had he laid stress on Karma as one of the ways to salvation,the people would not have understood him; they would have thought that they had one more authority for their belief in rites and ceremonies as all-sufficient for salvation. These things must be remembered when we find Shankara and Ramanuja and Madhwa differing so widely from each other in their interpretation of the Upanishad. It was necessary that the Scripture should be interpreted by Shankara wholly in the light of Adwaita, the Monistic conception of the Eternal, so that the Monistic idea might receive its definite and consummate philosophical expression;for a similar reason it was necessary that Madhwa should interpret them wholly in the light of the Dwaita or dualistic conception and that Ramanuja should find a reconciliation in Visishtadwaita, a modified Monism. All these conceptions ofthe Eternal have their own truth and their own usefulness to the soul in its effort to reach Him. But the Upanishad is not concerned only with the ultimate reality of the Brahman to Himself,but also with His reality in His universe and His reality to the Jivatman or individual self. It is therefore sometimes Adwaitic,sometimes Dwaitic, sometimes Visishtadwaitic, and we should have the courage now to leave the paths which the mighty dead have trod out for us, discharge from our mind all preconceived philosophies and ask only, “What does the Upanishad actually say?” Never mind whether the interpretation arrived at seems to be self-contradictory to the logician or incoherent to the metaphysical reasoner; it will be enough if it is true in the experience of the seeker after God. For the Eternal is infinite and cannot be cabined within the narrow limits of a logical formula.
Sri Aurobindo. [Ishavasyopanishad]