Guru-kṛpā: If we say that Kṛṣṇa enters even within the atom, what is His business there?
Prabhupāda: Business is to guide the rascals like you. (laughter) Do you follow or not?
Guru-kṛpā: Well, the material atoms...
Prabhupāda: Because Kṛṣṇa loves you so much that even you accept this material atom, He goes to help you. Therefore He is within. Because sarvasya cāhaṁ hṛdi sanniviṣṭhaḥ (BG 15.15). The living entity has a..., enjoying this material world. So he has got everything. He's a person. He has got his heart. So in the heart there is Kṛṣṇa. Sarvasya cāhaṁ hṛdi sanniviṣṭho. You read Bhagavad-gītā. Why? Why He has..., sarvasya cāhām hṛdi sanniviṣṭho? Hmm? Who will say? Why He has...? Your question is "Why?"