He summarizes the yoga processes in the Sixth Chapter, last verse, yoginām api sarveṣāṁ (BG 6.47): "Of all the yogīs, one who always thinks of Me with faith and love within himself," yoginām api sarveṣāṁ mad-gata āntarātmanā, "within the heart, within himself, always think of Me, Kṛṣṇa," śraddhāvān bhajate yo mam, "engaged in devotional . . ." sa me yuktatamo, "he is the highest, topmost yogī." He has described different process of yoga system. That's a fact. But He concludes that one who is thinking of Kṛṣṇa always within himself with faith and love, he is the topmost yogī.
So we are teaching our disciples to think of Kṛṣṇa always, twenty-four hours. This Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare, if you chant and hear the word "Kṛṣṇa," then you become the topmost yogī. And simplest method—anyone can practice it. God has given you the tongue, and you can chant "Kṛṣṇa." Actually they are chanting everywhere, in all parts of the world, very easily, even a child.
So this yoga system is recommended especially for this age because other yoga systems are very difficult processes for the present age. The haṭha-yoga system, to sit down in a sacred secluded place, straight right-angular, and looking towards the end of the nose, this is not possible for everyone. Therefore the topmost yoga system is to chant the Hare Kṛṣṇa mantra. And actually it is happening. Now our students all over the world, simply by chanting this holy name of God, Hare Kṛṣṇa, they are quickly advancing in spiritual knowledge. That's a fact.