Sometimes the Vedic literature highly praises fruitive activities, mystic yoga and the speculative search for knowledge as different ways to self-realization. Yet despite such praise, in all Vedic literature the path of devotional service is accepted as foremost. In other words, devotional service to Lord Kṛṣṇa is the highest perfectional path to self-realization, and it is recommended that it be performed directly. Fruitive activity, mystic meditation and philosophical speculation are not direct methods of self-realization. They are indirect because without devotional service they cannot lead to the highest perfection of self-realization. Indeed, all paths to self-realization ultimately depend on the path of devotional service.
When Vyāsadeva was not satisfied even after compiling heaps of books of Vedic knowledge, Nārada Muni, his spiritual master, explained that no path of self-realization can be successful unless it is mixed with devotional service. When Nārada Muni arrived, Vyāsadeva was sitting by the banks of the river Sarasvatī in a state of depression. Upon seeing Vyāsa so dejected, Nārada explained the deficiency in his compilation of various books: "Even pure knowledge does not look well unless it is complemented by transcendental devotional service. And what to speak of fruitive activities when they are devoid of devotional service? How can they be of any benefit to their performer?"
Similarly, Śukadeva Gosvāmī prays in Śrīmad-Bhāgavatam (2.4.17): "There are many sages who are expert in performing austerities, there are many men who give much in charity, there are many famous men, scholars and thinkers, and there are those who are very expert in reciting Vedic hymns. Although all the activities of these men are auspicious, unless one performs them in order to attain devotional service to the Lord, they cannot award the desired results. Therefore I offer my respectful obeisances unto the Supreme Lord, the only one who can award such results."
Although many types of philosophers and transcendentalists believe that one who lacks knowledge cannot be liberated from material entanglement, there is no possibility that knowledge without devotional service can award liberation. In other words, when jñāna, or the cultivation of knowledge, leads one onto the path of devotional service, then only does it help one gain liberation, but not otherwise. This is confirmed by Brahmā in Śrīmad-Bhāgavatam (10.14.4):
- śreyaḥ-sṛtiṁ bhaktim udasya te vibho
- kliśyanti ye kevala-bodha-labdhaye
- teṣām asau kleśala eva śiṣyate
- nānyad yathā sthūla-tuṣāvaghātinām
"My dear Lord, devotional service unto You is the best path for self-realization. If someone gives up that path and engages in the cultivation of knowledge or in speculation, he will simply undergo a troublesome process and will not achieve his desired results. Just as a person who beats an empty husk of wheat cannot get grain, one who engages simply in speculative knowledge cannot achieve the desired result of self-realization. His only gain is trouble."