Prabhupāda: So śrī-bhagavān uvāca means the supreme authority. Mattaḥ parataraṁ nānyat kiñcid asti dhanañjaya (BG 7.7). If you learn from the supreme authority without any deficiency, then the knowledge is perfect. Ordinary person, they have got four deficiencies: they commit mistake, they are illusioned, their senses are imperfect, and with imperfect knowledge they try to speak—that is cheating. Therefore we have to receive knowledge from the person who knows past, present and future. So the best personality—there are so many others—Kṛṣṇa and His representative. Both of them are perfect because Kṛṣṇa is perfect, there is no doubt, and one who speaks according to Kṛṣṇa, he is also perfect. A human being or a living being is not expected to become as perfect as Kṛṣṇa. That is not possible. Therefore, if a person sticks to the instruction of Kṛṣṇa, does not make any addition and alteration, he is also perfect.
Unfortunately, at the present moment especially . . . it was done formerly also five thousand years, that they make addition and alteration on the version of Kṛṣṇa. Just like Bhagavad-gītā is misinterpreted by so-called scholars and politicians. Just like in the Bhagavad-gītā it is said, dharma-kṣetre kuru-kṣetre samavetā yuyutsavaḥ (BG 1.1). Somebody interprets, "This dharma-kṣetra is this body." Why? Why one should interpret in that way? Interpretation is required when things are not very clear. Dharma-kṣetre kuru-kṣetre is still there. People go to Kurukṣetra for executing religious rituals. And in the Vedas it is stated, kuru-kṣetre dharmam ācaret. So why it should be interpreted as "body"? And where is the dictionary where dharma-kṣetra means "body"? So in this way, if we interpret Bhagavad-gītā, then we spoil the whole thing. I spoil myself and spoil others. Therefore the conclusion is we shall accept Bhagavad-gītā as it is, as it is spoken by Kṛṣṇa.