Anyone you love, you see always within your heart. Similarly, if you have love for God, Kṛṣṇa, then you can see Kṛṣṇa always. That is called yoga system. Dhyānāvasthita-tad-gatena manasā paśyanti yaṁ yoginaḥ (SB 12.13.1). Yoginaḥ, those who are yogis, under meditation, they see the Supreme Personality of Godhead within the heart. Dhyānāvasthita-tad-gatena manasā paśyanti yaṁ yoginaḥ. So there are many evidences in the śāstras. Yoga means to see the Supreme Lord within the heart. Īśvaraḥ sarva-bhūtānāṁ hṛd-deśe arjuna tiṣṭhati (BG 18.61). Īśvara, the Supreme Lord, is situated in everyone's heart. One has to see. One has to develop that visionary power, how to see God within the heart. That is wanted. That is called yoga system. Dhyānāvasthita. Otherwise Īśvara is there in everyone's heart. Therefore Kṛṣṇa says,
- yoginām api sarveṣāṁ
- mad gata āntarātmanā
- śraddhāvān bhajate yo māṁ
- sa me yuktatamo mataḥ
- (BG 6.47)
"The first-class yogi is he who is always seeing Me within his heart." Yoginām api sarveṣāṁ. There are different types of yogis. The first-class yogi is he who can see Kṛṣṇa within his heart constantly, without any cessation. Smartavyaṁ satato viṣṇuḥ vismārtavyaṁ na jātucit. This is the process. One has to observe Viṣṇu within the heart always. Smartavyaṁ satato viṣṇuḥ vismartavyam na... This is Kṛṣṇa consciousness. One has to think of Kṛṣṇa or see Kṛṣṇa within the heart twenty-four hours. That is perfection of yoga. Yoginām api sarveṣāṁ mad-gatena āntarātmanā.