Guest: Yes. Can you scientifically prove this, sir? I mean is it purely a matter of belief or . . .
Prabhupāda: This is science. Our science is perfect science, because we are receiving knowledge from the perfect, Kṛṣṇa. And the so-called science is imperfect because the knowledge is received from imperfect person. However great scientist you may be, you have to admit that your senses are imperfect.
Guest: Yes.
Prabhupāda: So imperfect senses can give imperfect knowledge. That is not scientific knowledge. What you are thinking scientific knowledge, that is bogus, because the man who has given that knowledge, he's imperfect. How you can expect perfect knowledge from the imperfect person?
Guest: It's a question of degree.
Prabhupāda: Now, degree may be, but ultimately, if you are unable to give perfect knowledge, then what is the use of taking knowledge from you?
Guest: Yes, I accept that view. But how do you prove that a man . . .?
Prabhupāda: Yes, therefore you take from the perfect, Kṛṣṇa. We take from Kṛṣṇa's representative—one who speaks as good as Kṛṣṇa. That is our process. Evaṁ paramparā-prāptam imaṁ rājarṣayo viduḥ (BG 4.2). We don't take, don't accept knowledge from any rascal. We accept knowledge from Kṛṣṇa, the Supreme. I may be rascal, but because I am receiving knowledge from the perfect, whatever we speak, that is perfect. A child may be innocent; he does not know. But he has learned that this article is called spectacle. So when he says, the child says: "Father, this is spectacle," this is perfect knowledge. Similarly, if you hear from the perfect and act accordingly, then you are perfect. Now Kṛṣṇa says, tathā dehāntara-prāptiḥ (BG 2.13). Tathā dehāntara-prāptiḥ: after death there is another body. So we accept it. It doesn't require any proof of so-called science, who's imperfect.
Guest (1): So the question of belief comes first.
Prabhupāda: It is not belief; it is fact.
Guest (1): Yes, but if you say fact, how do you prove?
Prabhupāda: This is proof, Kṛṣṇa says.
Guest (1): It has been said by Kṛṣṇa. Yes, but . . .
Prabhupāda: That is our Vedic evidence. Whenever we speak something, immediately quote from Vedas. This is our process. If it is accepted by the Vedic process, then it is perfect. Just like in the law court. You are lawyer. You are arguing. When you quote from a judgment, previous judgment, it is accepted. Similarly, when you give authoritative statement support of your talking, then it is perfect. That is the way. Otherwise, what for these books are there? If it is mental speculation, what is the use of these books? But as soon as we speak something, we immediately support by quoting from Vedic literature. And that is perfect.
And now you have to possess little knowledge. Just like Kṛṣṇa says . . . how Kṛṣṇa is perfect, Kṛṣṇa is giving example, side by side: Yathā, dehino 'smin yathā dehe (BG 2.13). Asmin dehe, as there is the soul, there is the soul, asmin dehe, and he's having different types of bodies, kaumāraṁ yauvanaṁ jarā, he's changing body from childhood, boyhood, boyhood to youthhood, youthhood to another state. Tathā dehāntara-prāptiḥ. Where is the illogical presentation? This is scientific. For an intelligent man, this is scientific. And if he's still dull-headed, then what can be done?