Pradyumna: "Out of many such man-like animals, there is actually a man who knows the responsibility of human life and thus tries to make life perfect by following the prescribed duties. And out of many . . . and out of such many thousands of persons who have thus attained success in human life, one may know scientifically about the Personality of Godhead, Śrī Kṛṣṇa."
Prabhupāda: Yes. So it is not so easy to understand Śrī Kṛṣṇa. Manuṣyāṇāṁ sahasreṣu kaścid yatati siddhaye, yatatām api siddhānām (BG 7.3): "Those who have endeavored for perfection of life, out of many such person, one can hardly understand Kṛṣṇa." It is not so easy. But it is by Kṛṣṇa's grace. Kṛṣṇa, being very compassionate with these fallen souls of this age, He appeared as Lord Caitanya and distributed Kṛṣṇa.
That is His prerogative. That is His right. If Kṛṣṇa wants to distribute Himself freely, that is a different thing. Otherwise, it is not so easy to understand Kṛṣṇa. Just like to earn one million dollar is not so easy. But if you are fortunate, you meet somebody who can distribute million dollars at a time, that is a different thing.
Therefore Lord Caitanya Mahāprabhu was recognized by Rūpa Gosvāmī, namo mahā-vadānyāya kṛṣṇa-prema-pradāya te (CC Madhya 19.53): "My dear Lord, You are the most munificent of all incarnation. The other incarnation, people could not understand; but You are freely distributing Yourself." Kṛṣṇa-caitanya-nāmne. Kṛṣṇāya kṛṣṇa-caitanya-nāmne gaura-tviṣe namaḥ. Therefore we have to follow the footsteps of Rūpa Gosvāmī, rūpānuga. Then we can understand Lord Caitanya. And if we get favor of Lord Caitanya, we can very easily understand Kṛṣṇa. This is the process.