…Crows and swans are not birds of the same feather because of their different mental attitudes. The fruitive workers or passionate men are compared to the crows, whereas the all-perfect saintly persons are compared to the swans. The swans do not take pleasure in the places where crows are assembled for conferences and meetings. They are instead seen in the atmosphere of natural scenic beauty where there are transparent reservoirs of water nicely decorated with stems of lotus flowers in variegated colors of natural beauty. That is the difference between the two classes of birds.
Those words which do not describe the glories of the Lord, who alone can sanctify the atmosphere of the whole universe, are considered by saintly persons to be like unto a place of pilgrimage for crows. Since the all-perfect persons are inhabitants of the transcendental abode, they do not derive any pleasure there.
On the other hand, that literature which is full of descriptions of the transcendental glories of the name, fame, forms, pastimes, etc., of the unlimited Supreme Lord is a different creation, full of transcendental words directed toward bringing about a revolution in the impious lives of this world’s misdirected civilization. Such transcendental literatures, even though imperfectly composed, are heard, sung and accepted by purified men who are thoroughly honest.
… literatures which describe the glories of the Lord are enjoyed by the paramahaṁsas who have grasped the essence of human activities.
By His Divine Grace A.C. Bhaktivedanta Swami Prabhupada
Canto 1, Chapter 5, Texts 10-11