It is accepted by all types of philosophers and transcendentalists that one who lacks knowledge cannot be liberated from material entanglement. Yet knowledge without devotional service cannot possibly award liberation. In other words, when jñāna, or the cultivation of knowledge, opens onto the path of devotional service, it can give one liberation, but not otherwise. This is also stated by Brahmā in Śrīmad-Bhāgavatam (SB 10.14.4):
- śreyaḥ-srutiṁ bhaktim udasya te vibho
- kliśyanti ye kevala-bodha-labdhaye
- teṣām asau kleśala eva śisyate
- nānyad yathā sthūla-tusāvaghātinām
"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. A person who beats an empty husk of wheat cannot get grain, and one who engages simply in speculative knowledge cannot achieve the desired result of self realization. The only gain is trouble."
In Bhagavad-gītā it is stated (BG 7.14) that material nature is so strong that it cannot be surmounted by an ordinary living entity. Only those who surrender unto the lotus feet of Kṛṣṇa can cross the ocean of material existence. The living entity forgets that he is eternally the servitor of Kṛṣṇa, and his forgetfulness causes his bondage in conditional life and his attraction for material energy. Indeed, that attraction is the shackle of material energy. Since it is very difficult for a person to become free as long as he desires to dominate material nature, it is recommended that he approach a spiritual master who can train him in devotional service and enable him to get out of the clutches of material nature and achieve the lotus feet of Kṛṣṇa.
There are eight divisions of human society created to facilitate the execution of duty (the brāhmaṇas, or intellectuals; the kṣatriyas, or administrators; the vaiśyas, or businessmen and farmers; and the śūdras, or laborers—as well as the four āśramas: the brahmacārī, or student; the gṛhastha, or householder; the vānaprastha, or retired person; and the sannyāsī, or the person in renounced life), but if a person is lacking in devotion or Kṛṣṇa consciousness, he cannot be released from material bondage, even if he executes his prescribed duty. On the contrary, even by discharging his prescribed duty he will glide down into hell due to material consciousness. Therefore whoever is engaged in his occupational duty must simultaneously cultivate Kṛṣṇa consciousness in devotional service if he wants liberation from material clutches.
In this regard, Lord Caitanya recited a verse from Śrīmad-Bhāgavatam which was delivered by Nārada Muni to indicate the path of bhāgavata cultivation. Nārada Muni pointed out that the four divisions of human society, as well as the four orders of life, are born out of the gigantic form of the Lord. The brāhmaṇas are born from the mouth of the universal form of the Lord, the kṣatriyas are born out of the arms, the vaiśyas out of the waist, and the śūdras out of the legs. As such, they are qualified in the different modes of material nature within the form of the virāṭ-puruṣa. If a person is not engaged in the devotional service of the Lord, he falls from his position, regardless of whether he executes his prescribed occupational duty or not.