“Thus it is Lord Caitanya who has given the direct meaning of the Vedānta-sūtra. No Vedic scripture should be used for indirect speculation. In addition to Śaṅkarācārya, other materialistic philosophers like Kapila, Gautama, Aṣṭāvakra and Patañjali have put forward philosophical speculations in various ways. Indeed, the philosopher Jaimini and his followers, who are all more or less logicians, have abandoned the real meaning of the Vedas—devotional service—and tried to establish that the Absolute Truth is subordinate to the material world. It is their opinion that if there is a God He will be pleased with us and give us all desired results if we simply perform our material activities nicely. Similarly, the atheist Kapila tried to establish that it is not God who created the material world but rather a combination of material elements. Gautama and Kaṇāda have also given stress to the material elements, trying to establish that atomic energy is the origin of creation. Impersonalists and monists like Aṣṭāvakra have tried to establish the impersonal effulgence (brahmajyoti) as the Supreme. And Patañjali, one of the greatest authorities on the yoga system, has tried to conceive of an imaginary form of the Supreme Lord.
“In summary, it should be understood that all these materialistic philosophers have tried to avoid the Supreme Personality of Godhead by putting forward their own mentally concocted philosophies. But Vyāsadeva, the great sage and incarnation of Godhead, has thoroughly studied all these philosophical speculations and in answer has compiled the Vedānta-sūtra, which describes the relationship of everything with the Supreme Personality of Godhead, the execution of devotional service, and the ultimate achievement, love of Godhead. The Vedānta-sūtra begins with the aphorism janmādy asya yataḥ, which Vyāsadeva explains in the first verse of Śrīmad-Bhāgavatam, thus establishing from the very beginning that the supreme source of everything is a cognizant, transcendental person.