Harikeśa: Śrīla Prabhupāda, what's the difference between a Brahmavādī and a Māyāvādī?
Prabhupāda: That you already questioned. We answered.
Harikeśa: I did?
Prabhupāda: Yes. (break) ...vādī means those who are aspiring to merge into the impersonal Brahman effulgence.
Harikeśa: And Māyāvādīs, they do not attain that impersonal realization?
Prabhupāda: Māyāvādīs remain fools forever.
Harikeśa: They never leave this material platform.
Prabhupāda: They do not know. They have no knowledge. Aviśuddha-buddhayaḥ (SB 10.2.32), always impure. Otherwise how they are thinking, so 'ham: "I am same. I am God. I am moving the sun, I am..." Such rascals, they remain always in ignorance. (break) ...no sense that "If I am the same, then why I have fallen down in this māyā?" They say, "It is my līlā. I have become dog. So it is my līlā. I have become hog. It is my līlā." (laughs) This is their philosophy. Hare Kṛṣṇa. (break) Māyāvāda. They are fools, mūḍha. Māyayāpahṛta-jñānā. They are described in the Bhagavad-gītā. Māyāvādī means māyayāpahṛta-jñānā: "Their knowledge has been taken away by māyā." Fools. Either you call them fool or call them lowest of the mankind or the most sinful, whatever way you can call, they are like that. All good qualifications. Therefore Caitanya Mahāprabhu has warned, māyāvādī-bhāṣya śunile haya sarva-nāśa: (CC Madhya 6.169) "If you hear from Māyāvādī, then your spiritual life is finished." It's so dangerous.
Harikeśa: The Brahmavādīs have some possibility of advancement?
Prabhupāda: Oh, yes.
Harikeśa: What is that thing that enables them to advance?
Prabhupāda: That you will know later on. First of all try to understand this. Don't try to understand everything in a moment. That is foolishness. (break)