Prabhupāda: Indian: There is a test of knowing the thing. You are just describing the qualities of the soul. If you can say mango, mango is very sweet, color is like this. But it requires to taste the mango. So I want to realize the soul. What is the shortest way?
Prabhupāda: There is mango. But you have no eyes to see it. That is the difference. Soul is there. Just like we have begun our instruction: dehino 'smin yathā dehe (BG 2.13). There is dehī. There is the soul within this body. Kṛṣṇa says. So we have to accept Kṛṣṇa's authority. You cannot see the soul. That does not mean there is no soul. Your, what is the value of your eyes? You cannot see so many things. Because you cannot see the soul, it does not mean there is no soul. We have to accept the authority.
Indian: Why can't I see?
Prabhupāda: Eh?
Indian: Why I can't...?
Prabhupāda: Because your eyes are imperfect.
Indian: So what is the proof that there is soul?
Prabhupāda: Because there is a proof. As soon as the soul is gone, you are dead body. That is the proof.