Vāsudevaḥ sarvam iti. By culture of knowledge, by philosophical speculation, if one comes to this point, conclusion, that vāsudevaḥ sarvam iti (BG 7.19), Vāsudeva, Kṛṣṇa, is everything, then he's jñānavān, real jñānavān. That is real . . . jñāne prayāsam udapāsya namanta eva (SB 10.14.3). He must be submissive. That submissive means, "Yes, after cultivating knowledge, my Lord, Kṛṣṇa, I have come to this conclusion, that You are the Supreme Absolute Truth. I bow down my head upon Your lotus . . ." That is real jñāna. That is jñāna. Otherwise, ajñāna.
But they are accepting ajñāna as jñāna. To accept ajñāna as jñāna is the most unfortunate position. That is not jñāna. Real jñāna is how to surrender to Kṛṣṇa. So this is jñāna. For yogī, this instruction also is there. Karmī, jñānī, yogī and bhakta. There are four classes of men, transcendentalists. They're all transcendentalists, culturing spiritual . . . that's . . . that's all right. But even in the spiritual cultivation there is superior, inferior. Not exactly superior or inferior, because that is the material. But still there are classification.
This classification is ended when one comes to know Kṛṣṇa. Yasmin vijñāte sarvam evam vijñātaṁ bhavanti (Muṇḍaka Upaniṣad 1.3). If one understands Kṛṣṇa, then Paramātmā and Brahman becomes automatically known. Sarvam evaṁ vijñātaṁ bhavanti. Just like if you have got one hundred thousand dollars, ten dollar is within it, fifty dollar is within it, five hundred dollars is within it.
So in the Bhagavad-gītā everything is discussed there—jñāna-yoga, karma-yoga, dhyāna-yoga, buddhi-yoga, so many yogas. But Kṛṣṇa says, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66), ultimately. That means, "If you surrender unto Me, all these yogas are included." All these yogas—karma-yoga, jñāna-yoga, dhyāna-yoga—all yogas are included. Yoginām api sarveṣāṁ (BG 6.47).