Prabhupāda: Ūrdhvaṁ gacchanti sattva-sthā madhye tiṣṭhanti rājasāḥ (BG 14.18). Those who are too much passionate, they are meant to live in this planet. This planetary system, status. There are many other planets like this world. So they are allowed to live here. Here all living entities, they are very much passionate. And adho gacchanti tāmasāḥ. And there are other planets, they are dark, dark planets, below this earthly planet. And the animals, they are in darkness. Although they're on this park, but they do not know where they are, darkness. Their knowledge is not developed. This is the result of the modes of ignorance. And those who are Kṛṣṇa conscious, they are neither in darkness, nor in passion, nor in goodness. They are transcendental. So if one cultivates Kṛṣṇa consciousness nicely, he is at once promoted to the Kṛṣṇaloka. That is wanted.