Prabhupāda: Soul is the same. Just like you are under certain conception of life at the present moment. Just like your these countrymen. They were under certain conception of life. But by training they have taken another conception of life. So the ultimate training is how to become Kṛṣṇa conscious. That is perfection.
Bob: If two people are Kṛṣṇa conscious, is their soul the same?
Prabhupāda: Soul is always the same.
Bob: In each person. In each person is it the same?
Prabhupāda: Yes. (break) Soul, as spirit soul, pure soul, they are all equal. Even in animal. Therefore it is said, paṇḍitāḥ sama-darśinaḥ (BG 5.18), means those who are actually learned, they do not see the outward covering, either human being or animal.