There are different planetary systems. They . . . do not think that there are vacant only. No. That is not the fact. Just like this planet is full of living entities, similarly all other planets are full of living entities. There are different grades. Just like the . . . in this planet also there are inhabitants in Africa and there are inhabitants in Europe, America, Australia, and the quality of man are different. Similarly, as we find different qualities of men even on this planet, similarly in other planets also there are different qualities of human being.
Generally, in the higher planetary system they are more intelligent than the human being. Ūrdhvaṁ gacchanti sattva-sthāḥ (BG 14.18). Those who are on the platform of goodness, ūrdhvaṁ gacchanti, they are promoted to the higher planetary system. Above our planet there are so many other planets. This is called Bhūr-loka. Above this, Bhuvar-loka; there is Svargaloka, then Janaloka, then Tapoloka, then Maharloka, then Satyaloka, then there is spiritual sky. Then there is spiritual planet. There are so many things.
It is not that we are . . . kūpa-maṇḍūka-nyāya. Kūpa-maṇḍūka-nyāya, Dr. Frog. A frog lives in a well, three feet, that's all. So if he's informed that there is Atlantic Ocean, Pacific Ocean, he becomes surprised—"How is that? What is that Pacific Ocean?" he will ask. He will try to measure Pacific Ocean from the well. So that is not possible. One who is living in the well, he must get information of the Pacific Ocean if he cannot get out.