In the Bhagavad-gītā it is said prakṛti, the nature, because that living entity has associated with this certain quality of nature, the nature is making him dance in that quality. I am thinking, "I am this, I am that, I am that, I am that." This is the basic principle of understanding. One should know . . . that is freedom that, "I do not belong to anything of this bodily connection." Because to conceive in the bodily concept of life, sa eva go-kharaḥ. Yasyātma-buddhiḥ kuṇape tri-dhātuke (SB 10.84.13). I am not this.
This is most essential education. Unfortunately, the so-called scientists are making more and more attached to this body. How much misleading they are. Therefore I am speaking to our scientist friend that, "Now it is the time for making propaganda amongst the so-called scientist, philosophers, leaders, politicians." Because they are misleading the whole people of the world under the bodily concept of life. They are fighting. So the opportunity of becoming Kṛṣṇa conscious—this is the human life—they are checking that, stopping that. Greatest enemy of the human civilization, these rascals. These rascals who is checking Kṛṣṇa consciousness, or God consciousness, and alluring them in different concept of life by designation, they're the greatest enemy of the human society. They are checking the progress of human life. If we accept evolutionary theory, by evolution we have come to . . . actually, we have come from aquatics to plants and trees and then insect, then beast, birds. In this way we have come to this human form of life. Now what is next evolution? That they do not know.
Next evolution is explained in the Bhagavad-gītā. You read carefully. What is that evolution? Yānti deva-vratā devān (BG 9.25). Now the next evolution is, if you want to go to the higher planetary system, you can go. But they cannot know, they do not know what are these higher planetary systems. They, we see, every night, there are so many planets, stars, but from the śāstra we can understand that the higher planetary system means the material comforts available there, many, many times more than in this planet. You live in this planet utmost for one hundred years. But in the higher planetary system you can live which you cannot calculate. Just like Brahmā's life, as stated in the Bhagavad-gītā: sahasra-yuga-paryantam ahar yad brahmaṇo viduḥ (BG 8.17). Brahmā's twelve hours even you cannot calculate with your mathematical figures. But one has to die. Nobody can live permanently within this . . . even if you have got a long duration of life.
So these facilities you can get in higher planetary system, if you prepare yourself. Yānti deva-vratā devān pitṟn yānti pitṛ-vratāḥ (BG 9.25). Similarly, you can go to the Pitṛlokas. You can meet there your forefathers if they are, of course, eligible. And bhūtejyā . . . if you want, you can remain here. And mad-yājino 'pi mām: "And if you become a devotee of Me, then you can come to Me." This is the position. If you like, you can go to hell, you can go to the heaven, you can go to back to home, back to Godhead. This is your position. Therefore intelligent person should think over that, "If I am . . . I have to prepare for my next life, why not prepare for going back to home, back to Godhead?" This is intelligence. "If I have to work to go to the higher planetary system or lower planetary system . . ." Because this body will be finished; next body I'll have to accept.
So what kind of body I shall accept, that is stated in the śāstras. Ūrdhvaṁ gacchanti sattva-sthāḥ (BG 14.18). Read Bhagavad-gītā. These things are there. Those who are in the modes of goodness . . . goodness means avoiding these four principles of sinful life. Even if you do not become a pure devotee of the Lord, if you follow the principles, the regulative principles, then you remain in goodness. And if you remain in goodness, then your next life is in the higher planetary system, even not going back to home, back to . . . you'll get that opportunity. So everything is there. We have to utilize our intelligence. Then . . . this life is meant for that. But if we waste our life, misuse this opportunity of human life just to live like the cats and dogs, āhāra-nidrā, eating, sleeping, mating and defending, then we are spoiling.
But these rascals, they do not know. They do not believe that there is next life. As I have told you many times, that Professor Kotovsky in Russia, he said: "Swāmījī, after this body's finished, everything's finished." Just see. He's a big professor. He's saying like that. Our scientists also . . . they have no knowledge. Still, they're passing as scientists, philosophers, and misleading persons. This is our greatest grief. Therefore I am requesting you all: just make a plan to face these rascals and defeat them. They are misleading the whole human society. Now the Kṛṣṇa consciousness movement should take this turn. They may not think that these boys and girls, so-called Kṛṣṇas, they are sentimentalists, chanting and dancing. That is, of course, the ultimate goal. But they do not understand. They think that we are simply sentimental. We are the greatest scientist. We are the greatest philosopher. We are the greatest humanitarian. They should know that.