We are called vibhinna, separated particles, part and parcel of Nārāyaṇa. And Nārāyaṇa has got personal expansions. So we are to get knowledge from Nārāyaṇa, or Kṛṣṇa. That is perfect. That is perfect knowledge. The Vedas means the knowledge from Nārāyaṇa. Therefore it is perfect. Tene brahma hṛdā ādi-kavaye (SB 1.1.1). He imparted the Vedic knowledge. Lord Brahmā is not independent. He received knowledge from Nārāyaṇa. So if you receive knowledge from Nārāyaṇa, that is perfect knowledge. That Nārāyaṇa, sa bhagavān svayaṁ kṛṣṇaḥ nārāyaṇaḥ (Śaṅkarācārya). If you receive knowledge from Kṛṣṇa, that is perfect.
Therefore Arjuna is putting question, these questions that, "What is this material nature?" Prakṛtiṁ puruṣam. "What are these living entities who are trying to enjoy this material nature?" Puruṣa wants to enjoy prakṛti. So that I have explained yesterday, that although we are also prakṛti, we are now in the mentality of puruṣa. Just like in this material world, man and woman. The man is trying to enjoy the woman, and the woman is trying to enjoy the man. This attitude of enjoyment is called puruṣa. Actually, we are not puruṣa; we are also prakṛti. Jīva-bhūtāṁ mahā-bāho yayedaṁ dhāryate jagat. Apareyam itas tu viddhi me prakṛtiṁ parām (BG 7.5). We are superior prakṛti, but we are prakṛti. But because we are trying to enjoy the other prakṛti, which is dull matter, therefore we are sometimes called as puruṣa, the mentality as puruṣa.