"Except this Kṛṣṇa conscious movement, all the rascals, they do not know what is God. They have no clear conception of God, because they are sinful. We can give the name, address and everything of God, clear conception, not vague idea, 'God may be like this. God may be like that.' Why maybe? Here is God:
veṇuṁ kvaṇantam aravinda-dalāyatākṣaṁ
govindam ādi-puruṣaṁ tam ahaṁ bhajāmi
Clear conception. The śāstra, Brahma-saṁhitā, clear description of God: veṇuṁ kvaṇantam. He is playing on flute. It is not that the Muralīdhara, Śyāmasundara, Kṛṣṇa, has been imagined by some poet. No. It is described in the śāstra, the form of the Lord. He is busy in playing flute, veṇuṁ kvaṇantam. Aravinda dalāyatākṣaṁ, His eyes are just like petals of the lotus flower. Veṇuṁ kvaṇantam aravinda... barhāvataṁsa, there is a peacock feather on His head.
Kandarpa-koṭi-kamanīya-viśeṣa-śobhaṁ, and He is so beautiful that His beauty can cut down thousands of Cupids. Cupid is supposed to be the most beautiful in this material world. Kandarpa-koti-kamanīya-viśeṣa-śobhaṁ govindam ādi-puruṣaṁ tam ahaṁ bhajāmi (Bs. 5.30). Clear conception. This is the description of God in the śāstra.
And when God came, Kṛṣṇa came on this planet, the same description: He is playing on flute, He has got the feather, peacock feather. So this painting of Kṛṣṇa is not an artist's imagination. It is exactly the form. So here is the form of the Lord. Here is the name of the Lord. Here is the activities of the Lord. This is clear conception. A sādhu knows what is God."
(Srila Prabhupada Lecture, London, July 18, 1973)