Why an impersonalist, although very advanced in knowledge, in Vedic knowledge, still he does not know what is Kṛṣṇa? He inquires, "What is God?" Just see. God is canvassing, "Here I am," and he is inquiring, "What is God?"
So this is our misfortune. Why they cannot realize? Duṣkṛtina. Duṣkṛtina means acting sinfully, specifically denying the existence of God. That is the greatest offense. Suppose you are a gentleman, and if I say: "You are blind. You are lame. You are handless. You are armless. You have no head. You are . . ." will you be sat . . . happy? Will anybody will be happy? Similarly, those persons who are describing the Absolute Personality of Godhead, "He has no eyes . . ." in other words, He is blind; "He has no hand," mean armless, "He has no leg," then He is lame man, "He has no tongue." In this way it is the definition by negation, and after all, make it zero. If you cut my hand, leg, my head, my eyes, ears, then what I remain?
So the atheist class men, they say openly they don't believe in God. That is honest. And those who have taken the shelter of Vedas and talking of God as armless, legless and headless and earless, they are saying the same thing. Vedāśraya nāstika-vāda bauddha ke adhika. Caitanya Mahāprabhu has said that veda nā māniyā bauddha haila nāstika: "Persons who do not agree with the Vedic authority . . ." He called them nāstika. As the Mussulman, they say one who does not believe in the Koran, he is kafir, and Christian, one who do not believe in the Bible, they are called heathens, similarly, according to our Vedic civilization, anyone who does not accept the authority of Vedas, he is called atheist. So Caitanya Mahāprabhu says that veda nā māniyā bauddha haila nāstika. Buddha philosophy, they do not accept the authority of Vedas, although Lord Buddha is accepted as incarnation of Kṛṣṇa. Keśava dhṛta-buddha-śarīra jaya jagadīśa hare. But for the time being, he did not accept the authority of Veda. Nindasi yajña-vidher ahaha śruti-jātam. Lord Buddha was preaching ahiṁsā, so according to Vedic rituals there is prescription sometimes—not always—killing of animals. So when Lord Buddha was preaching ahiṁsā, "No more animal killing," the so-called Vedāntists and Vedic followers, they said, "Why you are preaching in that way? We have got in the Vedas many animal sacrifice is prescribed there, paśu-bali." So Lord Buddha, what he will reply to these foolish persons what was his mission? He said: "I don't care for your Vedas." Therefore nindasi. Nindasi yajña-vidher ahaha śruti-jātam: "Although it is Vedic injunction, my Lord, you have decried." Means there is no way. Why? Sadaya-hṛdaya-darśita-paśu-ghātam: "You are so kind, you wanted to stop this poor animal killing: 'Never mind. For the time being stop Vedic authority.' "
So these things can be understood by the devotees. Although he decried Vedic authority, still, he is worshiped, keśava dhṛta-buddha-śarīra jaya jagadīśa. This is the understanding of the devotees. They know everything perfectly well, what is what. They know Śaṅkarācārya, what he is. Śaṅkarācārya is the incarnation of Lord Śaṅkara, Lord Śiva. Lord Śiva. Vaiṣṇavānāṁ yathā śambhuḥ. He is the topmost Vaiṣṇava. So the devotees know that Śaṅkarācārya was at heart a Vaiṣṇava, but he had to preach like a vaiṣṇava because he had to drive away Buddhism from India. That was the mission. So therefore he made something compromise with the Buddhist philosophies. Therefore Caitanya Mahāprabhu said he wanted to accept Vedas against Buddhism, who did not accept the Vedas, but he preached this atheism under the shadow of Vedas. He said therefore that veda nā māniyā buddha haila nāstika, vedāśraye vāda nāstika ke adhika. So these are the discussion. One has to learn very cautiously how, what is the purpose of why Lord Buddha came, why Lord Śiva and Śaṅkarācārya came, why other ācāryas came, why Caitanya Mahāprabhu came. It requires thorough study under able guidance. Then one can understand.