When you were a child the consciousness was there. Then you grew up to your boyhood—the consciousness was there. Then you are now young—the consciousness is there. And when you become old man like me, the consciousness will be there.
Therefore, in spite of my changing different kinds of body, the consciousness is there. And when I shall change this body for another new body, this consciousness will go with me. And according to that consciousness, I'll get a particular type of body. So at the present moment, because we are changing different kinds of bodies, that means my consciousness is not pure. And we have to make our consciousness pure, which is technically called Kṛṣṇa consciousness. And as soon as the consciousness is pure, you get your eternal existential life. That is the sum and substance of becoming Kṛṣṇa conscious. And this movement is for that purpose, Kṛṣṇa consciousness.