We are concerned with the science of Kṛṣṇa. That is required. Cāṇakya Paṇḍita also. He was a politician. You know Cāṇakya Paṇḍita. Under his name there is, New Delhi, quarter: Cāṇakya Purī. He was a great politician, prime minister of Ma..., Samrat, Emperor Candragupta. He also advises. He has got a moral instruction, Cāṇakya-śloka. He says that viṣād apy amṛtaṁ grāhyam: "In the poison pot, if there is nectarine, you should accept it. Don't neglect it because it is on the poison pot. You are concerned with the nectarine. Take it." Viṣād apy amṛtaṁ grāhyam amedhyād api kāñcanam. In a filthy place... Suppose in your laboratory (lavatory?), in a very filthy place, there is gold. So it doesn't matter. You should take it, gold. It is not that the gold is in the filthy place, therefore you should not touch it. Other metal you cannot touch. That is the Vedic injunction. But gold you can take. Amedhyād api kāñcanam. Viṣād apy amṛtaṁ grāhyam amedhyād api kāñcanam, nīcād api..., duṣkulād api. You can take some teachings even one is born in lower-grade family. And the wife you can accept even she is, if she is qualified, and... Strī-ratnaṁ duṣkulād api. Strī-ratnam. Ratna means jewel. If one girl is very qualified or beautiful, even she is born of lower family, you must accept. You can marry. This is Cāṇakya Paṇḍita. Strī-ratnaṁ duṣkulād api. Viṣād amṛtaṁ grāhyam amedhyād api kāñcanam, nīcād apy uttamā vidyā. If a man born in nīca, in lower-grade family, but if he's qualified, it doesn't matter. That is practically being done.
So this is Vedic system. Not that one is lower in the estimation of the society by birth or so on. But he must be qualified. So here also it doesn't matter. This is going on. That is Vedic system. Devahūti does not deny to take instruction from her son. It is the system. It doesn't matter whether he's inferior. That is Caitanya Mahāprabhu's... Yei kṛṣṇa-tattva-vettā sei guru haya: (CC Madhya 8.128) "You will accept anyone as guru if he knows the science of Kṛṣṇa." That is Caitanya Mahāprabhu's... And Caitanya Mahāprabhu instructed everyone to become a guru. The world is suffering for want of Kṛṣṇa consciousness. That was His mission. He wanted that from India everyone should become a guru and preach outside, because there is no Kṛṣṇa consciousness. That is Caitanya Mahāprabhu.