One should approach guru for seeing the tattva, the Absolute Truth. That is necessary. Not for any material benefit. One should not search out a guru for, I mean to say, curing some material disease. For that, there is medical practitioner. Why should you search out after a guru? But people search out that, "I have got some material disease, and if somebody can cure, some saintly person, then he's guru or he's Bhagavān. I am poor. If he can give me some money, then he's guru." No. The śāstra does not say like that. Guru means śrotriyaṁ brahma-niṣṭham (MU 1.2.12). Tasmād guruṁ prapadyeta jijñāsuḥ śreya uttamam, śābde pare ca niṣṇātam (SB 11.3.21). Guru means who knows the Vedic śāstra, the Vedas. He knows the Vedic conclusion. And the Vedic conclusion is to understand Kṛṣṇa. That is Vedic conclusion. Vedaiś ca sarvair aham eva vedyam (BG 15.15).
Therefore those who are trying to understand Kṛṣṇa, or partially . . . we cannot understand fully Kṛṣṇa. That is not possible. We have not so capacity. Because Kṛṣṇa is so big. Advaita acyuta anādi ananta (Bs. 5.33). So with our limited knowledge we cannot understand . . . even Kṛṣṇa does not understand Himself, Kṛṣṇa is so great. Kṛṣṇa Himself, He does not know why He's so much attractive. Therefore, to understand this knowledge, why Kṛṣṇa is so attractive, He became Lord Caitanya, taking the ecstatic emotion of Śrīmatī Rādhārāṇī. Rādhā-bhāva-dyuti (CC Adi 1.5). That's a very great science. Kṛṣṇa is such that Kṛṣṇa . . . of course, it is our calculation that Kṛṣṇa does not understand Himself. So to understand fully Kṛṣṇa, it is not possible. But as far as our limited knowledge is concerned, if we understand Kṛṣṇa so much, that is our perfection. That is our perfection. Therefore Kṛṣṇa says, janma karma me divyaṁ yo jānāti tattvataḥ (BG 4.9).