The Lord says that "You, you just always remain thinking of Me." That means always remain in Kṛṣṇa consciousness. Simply this Kṛṣṇa consciousness means some way or other you have to think of Kṛṣṇa always. Some way or other you just engage yourself in some activities so that it can remind you about Kṛṣṇa. That is the process. Therefore those who are elevated devotees, they, in everything, they remember Kṛṣṇa. That is the perfection. (Bengali) Here is a light. A perfect devotee sees the light, not the light as it is, but he sees some relationship with Kṛṣṇa or Kṛṣṇa in the light. This is stated in the Bhagavad-gītā also, that prabhāsmi śaśi-sūryayoḥ. Raso 'ham apsu kaunteya prabhāsmi śaśi-sūryayoḥ. Kṛṣṇa says that "I am the taste of the water." Now the..., when you are thirsty you want water. You feel some nice taste in the water by which your thirst is satisfied, "Yes, now I am satisfied." So Kṛṣṇa says, "I am that taste." Similarly He says prabhāsmi śaśi-sūryayoḥ: "The light in the sun, in the moon, that I amthat light." In this way He has described. So when one is highly elevated in Kṛṣṇa consciousness, in everything, in every action and every phenomenon he will see only Kṛṣṇa. That is the perfection of Kṛṣṇa consciousness.
So that is being taught in the Ninth Chapter, and in this verse, man-manā bhava mad-bhakto, "Always think of Me," this is the sum and substance of all spiritual advancement. What is that? Smartavyaṁ satato viṣṇuḥ. One should always be absorbed in the thought of Viṣṇu, the Supreme Personality of Godhead. That is called samādhi. That is perfection of yoga. The yoga system is the practice of the most lower class of men. I mean to say spiritually, not materially. Because their mind is so much distracted from here and there, they have to concentrate the mind by practice and focus the mind on Viṣṇu. That is the yoga perfection, real. Now they are manufacturing so many other things, but the real yoga practice is this, that you have to draw your attention from everything and focus the same on Viṣṇu form. That is yoga system. Dhyānāvasthita manasā paśyanti yaṁ yoginaḥ. This is the definition of yogi. They are in meditation, dhyānāvasthita. Dhyānāvasthita means meditation. So those who are yogis... You have heard so much about meditation—there is very popular word in your country—and what is that meditation? The meditation is to focus the mind on the form of Viṣṇu.