Kṛṣṇa appears like human being, and we are also human being, the same two hands, two legs, one head. How is that He knows everything and I do not know? The conclusion should be derived like this, that we forget because we change our body. Just like I was a child, you were a child, every one of us. We did so many things in our childhood, but we have forgotten. With the change of the body, the activities of my past body is forgotten. This is a fact. Similarly, when we change this body, we get another body, we forget. But why Kṛṣṇa has not forgotten? That means He does not change His body. This should be the conclusion. This should be the conclusion from right, logical point of view. I forget because I change my body. Kṛṣṇa does not forget. He does not change His body. This should be the conclusion.
And Kṛṣṇa says also that sambhavāmy ātma-māyayā (BG 4.6): "I appear and disappear by My own energy." We are forced by the other energy. Just like I have got human body now. Now I shall have to change my body after my death. That change of body is not in my hand. Factually, it is in my hand, because according to karma, if I work nicely, then you get good body. And if you do not work nicely, then we get bad body. That is we can understand from the śāstra. Ūrdhvaṁ gacchanti sattva-sthāḥ (BG 14.18). How we can understand? Śāstra-cakṣusā: you have to see through the śāstra. Otherwise, we have no eyes to see past, present, future. Just like the astrology. Astrology, by calculation through the śāstra, astrological calculation can say what you were in your past life and what you will become in your next life. That is astrological system. They can say like that. So through the śāstra, by right calculation, we can understand.
So what is that? The total is that ūrdhvaṁ gacchanti sattva-sthāḥ (BG 14.18). Those who are situated in the modes of goodness, brahminical qualification, satyaṁ śamo damas titikṣā ārjavam, jñānaṁ vijñānam āstikyaṁ brahma-karma svabhāva-jam (BG 18.42). If we remain perfectly a brāhmin, truthful, clean, satyaṁ śaucaṁ; śamaḥ, sense-controlling, mind-controlling. Satyaṁ śaucaṁ śamo damas titikṣā, tolerance; ārjava, simplicity; jñānam, full knowledge; vijñānam, application of knowledge in life, vijñānam; āstikyam, full knowledge of the Absolute Truth, āstikyaṁ; brahma-karma svabhāva-jam (BG 18.42). If we remain in this qualification, brahminical qualification, this is called sattva-sthā, situated in the sattva-guṇa. The rajo-guṇa and tamo-guṇa cannot conquer. In that situation you'll be elevated to the higher planets. This is śāstra says. Ūrdhvaṁ gacchanti sattva-sthā madhye tiṣṭhanti rājasāḥ (BG 14.18). And the middle planetary system . . . this earthly planet is the middle, bhūr bhuvaḥ svaḥ, up to Svargaloka. So if we remain in the modes of passion, then within these planets we may rotate.