Prabhupada's lecture - Śrīmad-Bhāgavatam 1.10.2 - Mayapura, June 17, 1973
All right. So bhava-bhāvana. Kṛṣṇa... This world is created by Kṛṣṇa, and He wants to see it is properly maintained. And who will maintain? His own representative. Not the demons. Therefore king is supposed to be a representative of Kṛṣṇa. He will maintain this world properly. A Vaiṣṇava, he knows how to utilize everything for Kṛṣṇa. The aim of this creation is giving these conditioned souls another chance for liberation. That is the purpose. When the whole world is annihilated, then all the living entities again enter into the body of Mahā-Viṣṇu. Then, when there is again creation, then the living entities again come out, according to their past position. We do not accept this rascal theory, Darwin's, that from lower-grade life they... There is a promotion like that, but in the creation everything is there.
All the 8,400,000 species, they are all there. Although the gradations are there. So according to the past karma, karmaṇā daiva-netreṇa [SB 3.31.1], everyone comes out again, gets a different type of body, and begins his work. Again another chance. "Yes. You come to the point of human understanding. Try to understand your relationship with Kṛṣṇa and get yourself liberated. Go home, back to home, back to..." If you lose this opportunity—this creation is made for that purpose—then again you remain. Again, when everything is annihilated, you remain in dormant stage, millions of years. Again you become created.