Śrīmad-Bhāgavatam 1.8.41
—
Los Angeles, May 3, 1973
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 scientists, 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 insects. Then beasts, 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, at most, 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.