The original cause of creation must be sentient and supremely conscious, knowable only through Vedic authority, never through imperfect experimentation.Listen — Srila Prabhupada Uvaca
Janmāṣṭamī Morning Lecture [partially recorded] — August 13, 1971, London 710813L1-LONDON [09:16 Minutes] Lecture_710813L1-LONDON Janmastami_710813L1-LONDON Prabhupāda: Something chunk? What is that original [indistinct]? What is? Śyāmasundara: Something gas. Prabhupāda: Gas. Śyāmasundara: Liquid gas. Prabhupāda: Hmm. So anyway, that is not sentient; that is material.
Gas is also material. Gas is another form, vapor. Vapor... Vapor is made out of water.
Water or... Vapor is air, major portion of air and minor portion of water. In this way, vapor. So that means it is airy.
But no. Air has got its cause. They do not know. Air has got its cause: the sky.
The sky has its cause. In this way there is creation. In the Śrīmad-Bhāgavatam everything is explained. So this Brahma-saṁhitā, the point is, in this Brahma-saṁhitā Kṛṣṇa's name is there. In the Atharva Veda there is Kṛṣṇa's name.
So our process of knowledge: if there is Vedic evidence, that is perfect. You don't require to experiment. Experimental knowledge is never perfect. The same example as we have given several times: that which is unknowable, inconceivable, that knowledge you cannot get by experiment. That is not possible.
You have to receive the knowledge from authority. Just like you cannot understand who is your father by experiment, laboratory. Bring every man and analyze him whether he is your father. Is it possible?