It is stated in the Bhagavad-gītā,
- yānti deva-vratā devān
- pitṛn yānti pitṛ-vratāḥ
- bhūtejyā yānti bhūtāni
- mad-yājīno 'pi yānti mām
- (BG 9.25)
Now make your selection. If you want to go to the higher planetary system, you can go. If you want to remain here, in the middle planetary system, you can do so. And if you want to go to the lower planetary system, that you can do. And if you want to go to God, Kṛṣṇa, that also you can do. It is up to your option. Therefore, what is the difference between this material world, maybe in the higher planetary system or in the lower planetary system, and what is the spiritual world? The spiritual world means there is no material consumption. Everything is spirit, as I told you. The trees, the flowers, the fruits, the water, the animals—everything is spiritual. So there is no annihilation. It is eternal. So if you want to go to that spiritual world, then you can have this opportunity now in this human form of life, and if you want to remain in this material world, you can do so.
So our movement is that "Why not stop this material, conditional life, repetition of birth, death, old age and disease?" This is intelligence. "Why should we remain in this material body and undergo repetition change of body? Let us have our original, spiritual body." That is wanted. That is intelligence. The human life is therefore meant, as it is stated in the Vedānta philosophy, athāto brahma jijñāsā: "Now this life is meant for enquiring about the Absolute Truth." So that is required. That is human intelligence. And if we spoil our life like the animals. . . They are also eating; we are also eating. They are also sleeping; we are also sleeping. They are also having sex intercourse; we are also having sex intercourse. They are also defending; we are also defending. These four principles are common to the human being and to the animal. The special advantage of human being is that if he likes, he can stop this repetition of birth and death and go back to home, back to Godhead.
The Kṛṣṇa consciousness movement is trying to educate people about this science, how to go back to home, back to Godhead. It is not a so-called religious movement. Of course, anything which has connection with God, you can take it as religious movement. But it is very scientific movement. For the big scientists, philosophers, thinkers, they should try to understand this movement. We have got fifty-seven books for convincing the philosophers, scientists. If you want to know the value of this movement through science, philosophy, we have got enough ingredients to supply you. Otherwise, it is simple, very simple. Simply chant this mantra,
- Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare
- Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare
Then everything will be manifest to you. Ceto-darpaṇa-mārjanam (CC Antya 20.12). This chanting of Hare Kṛṣṇa mantra means cleansing the core of your heart. Because our heart or mind or consciousness is now covered with so many dirty things. So if we chant this Hare Kṛṣṇa mantra, then these dirty things will be cleansed. Then we shall be able to see, "What I am, what is my position, what is my goal of life, what I have to do." This is human consideration. The dogs, cats, they cannot do that. But a human being, they can do it very nicely.