Śrīmad-Bhāgavatam 3.25.31
—
Bombay, December 1, 1974
So Kṛṣṇa was so friendly and very loving friend, not ordinary friend. Therefore Kṛṣṇa said, "My dear Arjuna, don't be disappointed because you cannot execute this aṣṭāṅga-yoga. The first-class yogi is he who always thinks of Me." Yoginām api sarveṣāṁ mad-gatenāntar-ātmanā [Bg. 6.47]. One who has taken Kṛṣṇa within his heart and always thinking of Kṛṣṇa, satataṁ smartavyaḥ viṣṇuḥ, this is the system. This is meditation. If one is thinking of Kṛṣṇa twenty-four hours, that is the first-class meditation. You are seeing Kṛṣṇa here, standing with Rādhārāṇī. And if you see always, then you naturally you get impression of Kṛṣṇa within the heart. And if you serve Kṛṣṇa... Those who are engaged in service, just like they are offering this foodstuff, Kṛṣṇa. They have prepared this foodstuff very nicely, thinking that "Kṛṣṇa will eat. Let us do it very cleanly and attentively." And whatever they can offer, first-class thing... That is meditation, because they are thinking of Kṛṣṇa, "This foodstuff will be taken by Kṛṣṇa. This dress will be used by Kṛṣṇa. These flowers will be offered to the lotus feet of Kṛṣṇa." Real meditation is this. And that is the first-class yoga. Therefore Kṛṣṇa is advising in the Seventh Chapter that "If you cannot think of Me, then you can think of Me in your ordinary dealings." Raso 'ham apsu kaunteya: [Bg. 7.8] "I am the taste of the water."
So that, this yoga system, we have to practice, this yoga system. This is called sāṅkhya-yoga. That is explained here, provāca vai bhakti-vitāna-yogam. The more you think of Kṛṣṇa... Satataṁ cintayanto mām, satataṁ kīrtayanto mām [Bg. 9.14]. These are advised in the Bhagavad-gītā. If you always chant Hare Kṛṣṇa mantra, then you remember Kṛṣṇa. Immediately the form of Kṛṣṇa is awakened within your heart. And Kṛṣṇa says, yoginām api sarveṣāṁ mad-gatenāntar-ātmanā: "Always within the heart..." That is the sāṅkhya-yoga system, or perfect yoga system, bhakti-yoga-vitānam. And Kṛṣṇa says personally,
yoginām api sarveṣāṁ
mad-gatenāntar-ātmanā
śraddhāvān bhajate yo māṁ
sa me yuktatamo mataḥ
[Bg. 6.47]
They are first-class yogi. So anyway, some way or other, if you can think of Kṛṣṇa always... That is... We have named Kṛṣṇa consciousness, always conscious of Kṛṣṇa. Then you become the first-class sāṅkhya-yogī. Bhakti-vitānam