Now who can think of Kṛṣṇa always within himself? That is also very easy to understand. If you love somebody, then you can think of him always within yourself. Otherwise it is not possible. If you love somebody, then naturally you'll think of him always. That is described in the Brahma-saṁhitā:
- premāñjana-cchurita-bhakti-vilocanena
- santaḥ sadaiva hṛdayeṣu vilokayanti
- yaṁ śyāmasundaram acintya-guṇa-svarūpaṁ
- govindam ādi-puruṣaṁ tam ahaṁ bhajāmi
- (Bs. 5.38)
Premāñjana-cchurita-bhakti-vilocanena. One who has developed love of God, or Kṛṣṇa... When I speak of Kṛṣṇa, you should understand "God." Premāñjana-cchurita-bhakti-vilocanena (Bs. 5.38). Another name of Kṛṣṇa is Śyāmasundara. He is blackish like the cloud, but very beautiful; therefore His name is Śyāmasundara. So in this verse of Brahma-saṁhitā it is said that the santaḥ, saintly person, who has developed love for Śyāmasundara, Kṛṣṇa... Premāñjana-cchurita-bhakti-vilocanena santaḥ sadaiva (Bs. 5.38). Sadaiva means always, constantly. Santaḥ sadaiva hṛdayeṣu. Hṛdayeṣu means within the heart. Actually, when one comes to the point of samādhi in yoga system, he thinks of Viṣṇu form of the Lord within the heart without any stopping. That is called samādhi. He is absorbed in the thought of Viṣṇu within the heart.