When you forget something, that is also Kṛṣṇa's trick. Because . . . just like there are some persons who are devotee and some persons who are demons. So if anyone wants to become a demon, Kṛṣṇa is within. He'll give him intelligence in such a way that he becomes a first-class demon. What is the duty of the first-class demon? That he'll never understand Kṛṣṇa. (laughter) That is first-class demon. And if you want to hear Kṛṣṇa, then He will give you such instruction as you will be relieved from this miserable condition of material life and go back to home, back to Godhead. He's ready.
But He does not speak, generally, to the nondevotee. If you become a devotee, pure devotee, without any motive, then Kṛṣṇa is sitting within your heart. He says, teṣāṁ satata-yuktānāṁ bhajatāṁ prīti-pūrvakam (BG 10.10): "Persons who are twenty-four hours engaged in My service with love and faith," buddhi-yogaṁ dadāmi tam, "I give him such intelligence by which he can come back to home, back to Godhead." He'll give you. Because He knows. But if you don't like to take His instruction, then He gives instruction to the material nature to get you all right.