Just like in this life they're trying just to become in comfortable situation of this body, similarly, when they understand that, accepting at least that there is next life, they want to go to the heavenly planet, svarga. But they do not know that that is also not ultimate happiness. That is stated in the Bhagavad-gītā. You read nicely. Ābrahma-bhuvanāl lokāḥ punar āvartino 'rjuna (BG 8.16). Because if you even if you go to the Brahmaloka, the highest planet, either by good work or by your aeroplane sputnik . . . it is not possible to go there by sputnik (laughter), but you can go there by your pious activities. Yānti deva-vratā devān pitṟn yānti pitṛ-vratāḥ (BG 9.25). Yānti, you can go, but you have to adopt a means. But these are for the karmīs, those simply want comfortable life of this body. They cannot understand that "However comfortably I may live, I have to give up this body. Then what is my next position?" They do not know. They are called karmī.
So when one comes to this point to understand that, "This is simply futile, to work for this body," He's jñānī. He's jñānī. Jñānī means He's inquisitive to know the ultimate goal of life, "How I am eternal, how I can get eternal life." In this way, he tries for it. That is called jñānī. Karmī, jñānī, yogī and bhakta. There are four kinds of men. So jñānī and yogī . . . jñānī simply speculates, and yogī tries to practice. That is the difference. Their aim is the same. But yogī means he practically endeavours and jñānī means He's simply theoretical. Just like everything, in science also, there is theoretical and practical. So karmī is in the darkness. Actually, nicely dressed cats and dogs. That is karmī. And jñānī, who understands the futility of engaged, simply being engaged for the bodily comfort . . . he understands, "After all, the body will not stay. So why, why I am wasting by this way, if there is another business?" That is jñānī. And yogī means who practically endeavours.
So out of the yogīs, the bhakti-yogī is the best. That is recommended in the Bhagavad-gītā: yoginām api sarveṣām. Yoginām api sarveṣām (BG 6.47). There are many classes of yogī. Out of all these yogīs, the one yogī who is always thinking of Kṛṣṇa, He's first-class yogī. He's first-class yogī. Yoginām api sarveṣāṁ mad-gatenāntar-ātmanā. Mad-gata, "thinking of Kṛṣṇa only." He may not know very much about Kṛṣṇa, but simply He's thinking of Kṛṣṇa. That is sufficient. That is sufficient. Here we have got the Deity of Kṛṣṇa, and if we twenty-four hours see the Deity only, seeing here, you'll be perfect . . . you'll be perfect, simply by seeing. And then hear, then chant. There are so many. Śravaṇaṁ kīrtanaṁ viṣṇoḥ smaraṇaṁ pāda-sevanam (SB 7.5.23), nine kinds of methods. You adopt them all, or some of them, or at least one. Then you become perfect. That is bhakti-yogī. Some way or other, think of . . . yena tena prakāreṇa manaḥ kṛṣṇe niveśayet (Brs. 1.2.4). That is the instruction of Rūpa Gosvāmī, "Some way or other, just engage your mind in Kṛṣṇa." Some way or other. Teṣāṁ satata-yuktānām.