In the civilized nation, there is the four divisions of spiritual life and four divisions of... But they do not know it. But those who are followers of Vedic culture, they know how the divisions are to be made. Just like in your body, you have got four divisions: the head division, the arms division, the belly division, and the leg division. They're all required. It is not that simply you have got a nice brain like Professor Einstein; that will do. No. You must have hands also. You must have belly. You must have legs. Then it is complete. The head is most important part of the body—that is all right—but leg is also required. You cannot neglect leg. So similarly, this division is very scientific: intelligent class of men and martial class of men and productive class of men and laborer class of men. When we compare the laborer class of men with intellect, intellectual class of men, there is difference. But both of them are important factors to maintain this body. That is called varṇāśrama-dharma.
So life's aim is self-realization—Viṣṇu—not the skyscrapers. These are piling stones and woods. This is not very intelligent work. The woods and pile, stones and earth is there already—big, big mountain, hills. You do the business of a porter, carry it out, and high, I mean to say, heap, heap it in one place, it becomes a skyscraper building. And if you simply are proud of these heaps of stones and woods and iron, that is not civilization. That is not civilization. Civilization is that the living entity who is using these resources, what, to know what is the actual business. This piling of stones and wood is done also by the birds. They also pick up, according to their strength, some twigs, and they make a nest. That intelligence is there. The rat also, he makes subway. (laughter) You see, So this is not very intelligent work, to imitate the rats, the birds, the cats, the dogs. That is not civilization. Civilization means self-realization, "What I am? Why I am forced to die? I do not like to die." To know this, that is civilization. When all these inquiries will come into one's mind... "Well, I do not wish to die. Why death is there, forced? I am forced to die. I do not wish to be diseased. Why disease comes to me upon me?" When this "why" question will come, "Why?" that is humanity. And if he remains dull, "All right, let me die," then he's cat and dog. That's all. If there is no "Why?" then he's cat and dog.
So human civilization does not mean this piling of woods and stones. No. That is not human civilization. Human civilization means brahma-jijñāsā, inquiry. These are the inquiry. "Why? Why I am forced to do this?" These things are taught regularly in the varṇāśrama system. One is made brahmacārī, celibacy, spiritual. One is made a very decently, family life, gṛhastha. One is made retired life, sannyāsī. Very systematical. So if we don't follow the varṇāśrama-dharma, then we are not even human beings. They are cats and dogs. So therefore Rāmānanda Rāya proposed this varṇāśrama... Varṇāśramācāravatā. He quoted from Viṣṇu Purāṇa. But Caitanya Mahāprabhu said, "Oh, this is rejected." He immediately rejected. Now, so scientific institution of varṇāśrama-dharma system, coming from very early age, Caitanya Mahāprabhu said, "This is external. Say something better." So in this way, Rāmānanda Rāya was putting some better proposal than varṇāśrama-dharma. Then varṇāśrama-tyāga. Tyāga means renouncing, renounced order. But Caitanya Mahāprabhu's speaking, "No, no. It is ... It is not very important. Go more."
So when Caitanya Mahā..., eh, Rāmānanda Rāya quoted one verse from Bhāgavatam which was spoken by Brahmā, that jñāne prayāsam udapāsya namanta eva, "When one gives up this nonsense speculative process..." Everyone is speculating. The scientist, philosopher, everyone is speculating, just to show himself that he has grown very learned, he can put some theory. So this is first rejected. Brahmā... Brahmā says. Brahmā's experience... He's the topmost living creature within this universe. He said that "When a person will give up this nonsense habit of speculation..." Jñāne prayāsam udapāsya. He must become submissive. One should not pose himself that he knows something, he can speculate something, he can invent something. Just like the so-called scientists, they are simply speculating and wasting labor. Nothing can be done by you. Everything is already arranged. You cannot change. You can simply see how the law is working; so much you can do. But neither you can change the law, you can make a better facility for the law. No. That you cannot do. Daivī hy eṣā guṇamayī mama māyā duratyayā (BG 7.14). Duratyayā means it is very difficult. So Caitanya Mahāprabhu, when He was informed this statement of Brahmā, that one should give up the speculative method, that he can create something... These nonsense habits should be given up. He must become very humble. Humbler than the grass. Just like we trample over the grass; it does not protest. "All right, sir, you go." That type of humble. Tṛṇād api sunīcena taror api sahiṣṇunā. Taru means tree. Tree is so much forbearing.