Prabhupāda: Therefore we have to invoke our love for Kṛṣṇa. Then our loving propensities will be actually satisfied. Otherwise we'll be frustrated. Otherwise, we'll be frustrate . . . that is going on. We may admit or not admit, but this frustration of love affair is going on. So if we . . . that same thing we repose in Kṛṣṇa . . . if I want to love my son, if I accept Kṛṣṇa as my son . . . just like Yaśodāmayī accepted. Kṛṣṇa is the Supreme Personality of Godhead, but by devotional service, He agrees to become a son. Just like Yaśodāmayī and Nanda Mahārāja, in their previous lives they underwent severe austerities, and their aim was that "We shall have a son like God, like Kṛṣṇa." So after their performance of austerities for many thousands of years, when Kṛṣṇa appeared before them, "What benediction you want?" so they proposed that "We want a son like You. Then we enter into family life. Otherwise not."
So Kṛṣṇa said that, "Why shall I get a son like Me? I shall become your son." This is the fact. Therefore, although Kṛṣṇa took His birth as the son and . . . son of Devakī and Vasudeva, immediately ordered Vasudeva to transfer Him to Vṛndāvana to Yaśodā. So the pleasure of having son was enjoyed by Yaśodā and Nanda Mahārāja, not Devakī and Vasudeva, although they really gave birth to. And when Kṛṣṇa was grown up, then went to His real father, Vasudeva, and Devakī. So actually Kṛṣṇa's crawling, Kṛṣṇa's disturbing the mother, Kṛṣṇa's stealing the butter, and so many things, as child does, reciprocates with the father and mother, parent, these līlā was demonstrated in Vṛndāvana, although Mother Yaśodā and Vasudeva, er, I mean to say Nanda Mahārāja, they were foster father and mother.
So everyone can have Kṛṣṇa as his son. Everyone can have Kṛṣṇa as his friend. Everyone can have Kṛṣṇa as his master. Das . . . dāsya-rasa, sakhya-rasa, mādhurya-rasa. Even everyone can have Kṛṣṇa as their paramour. These things are very difficult to understand, but these rasas . . . they are called rasas. Parakīya-rasa. The parakīya-rasa means just like a man or woman has got his husband or wife, but he has got love with others. That is called parakīya-rasa. That is most abominable in this material world, but that is most first class thing in the spiritual world. Parakīya-rase yāṅhā brajete pracāra. So these things are very higher principles of spiritual life. But we can understand that whatever we are experiencing in this material world, that thing, in its pure form, is existing in the Supreme Absolute. That is the fact. Otherwise they cannot be manifested in this material . . . just like on the bank of a tank, pond, there is a tree, and you find the tree just upverted. The upper portion of the tree has gone down. That is described in the Bhagavad-gītā.
(aside) Find out in the Fifteenth Chapter: ūrdhva-mūlam adhah-śākhaṁ aśvatthaṁ prāhur avyayam (BG 15.1). Find out this verse.
This material world is the reflection, urdhva mulam. Generally the tree has got its root down, but the material world . . . so . . . it is described as a big banyan tree, but the root is upwards.