In this connection, Sri Ramanujacarya stated in the Vedartha-sangraha that devotional service is naturally very dear to the living entity. Indeed, it is life's goal. This devotional service is supreme knowledge, or Krsna consciousness, and it brings detachment from all material activity. In the transcendental position, a living being can perfectly acknowledge the superiority of serving the Supreme Lord. The devotees attain the Supreme Lord only by devotional service. Having such knowledge, one engages in his occupational duty, and that is called bhakti-yoga. By performing bhakti-yoga, one can rise to the platform of pure devotional service.

Elsewhere in the Bhagavad-gita (18.45-46) the Lord says:

Human society should be divided into four divisions-brahmana, ksatriya, vaisya and sudra-and everyone should always engage in his occupational duty. The Lord says that those engaged in their occupational duty can attain perfection simply by rendering loving devotional service to the Lord while executing their particular duty. Actually the modern ideal of a classless society can be introduced only by Krsna consciousness. Let men perform their occupational duty, and let them give their profits to the service of the Lord. In other words, one can attain the perfection of life by discharging one's occupational duty and employing the results in the service of the Lord. This method is confirmed by great personalities like Bodhayana, Tanka, Dramida, Guhadeva, Kapardi and Bharuci. It is also confirmed by the Vedanta-sutra.