So Bhagavad-gītā, Śrīmad-Bhāgavatam, they are meant for paramahaṁsa-sādhika-caraṇam, for the paramahaṁsas. Those who are duṣkṛtina, miscreants, crows, they cannot enjoy what is the taste of Bhagavad-gītā. Therefore Kṛṣṇa says to Arjuna . . . when He was teaching to him beginning of the Bhagavad-gītā, He said, bhakto 'si me priyo 'si me rahasyaṁ hy etad uttamam: "Because you are My devotee, because you are My friend, very dear friend, therefore I am disclosing you the mysteries, rahasyam."
Not anybody can understand Bhagavad-gītā. It is not possible if he does not follow the principles adopted by Arjuna. Bhakto 'si priyo 'si me (BG 4.3). That is the way of studying Bhagavad-gītā. Otherwise, those who are duṣkṛtina, they will take advantage of Bhagavad-gītā for making their business and flatter some other duṣkṛtina miscreants also to mislead them. Because other miscreants, they want to be misled, the asuras. Āsuri-bhāvam āśritāḥ.
What is the āsuri-bhāva, demonic tendency? The demonic tendency is that "I am God." That is called demonic, falsely thinking that "I am God." In spite of all education, they have not the little sense that how he becomes a God. Here is God, Kṛṣṇa. We have got His activities. He married sixteen thousand wives, and He constructed sixteen thousand palaces, and He expanded Himself into sixteen thousand forms. Here is one God. And you are or I am, I am sitting here; I cannot expand up to my apartment also, and how I am explaining . . . expecting to be called as God? These are the test.
But thing is, these people are popular because certain class of men, āsuri-bhāva, they also want to be cheated like that. Therefore Kṛṣṇa says, na māṁ duṣkṛtino mūḍhāḥ prapadyante narādhamāḥ (BG 7.15): "Those who are miscreants, those who are rascals, mūḍha, narādhama, lowest of the mankind, māyayāpahṛta-jñānā, and stolen of his knowledge by māyā, such persons, because they are asuras, demons, they do not surrender unto Me." So we have to take it from the statement of Kṛṣṇa that anyone who does not understand Kṛṣṇa, who does not surrender unto Kṛṣṇa, they are to be understood under these classification.
Then here is one commentation by a learned scholar and devotee, Baladeva Vidyābhūṣana. He said, nanu cettvām eva prapannā vimucyante, tarhi paṇḍitā api kecit kim iti tvāṁ na prapadyante. Now, if Kṛṣṇa has said simply by surrendering unto Him, mām eva ye prapadyante māyām etāṁ taranti te . . . our business is, in the human form of life, how to get out of the clutches or conditions of māyā. We are actually trying to do that. All the scientific improvement, material advancement of knowledge, means that we are trying to avoid the conditions imposed by material nature. That is actually we are doing. Why you have invented this electric fan? Call it that is material science improvement. Because in the excessive heat we are troubled. And wherefrom this excessive heat comes? It comes from the material nature.