Nirbandhe kṛṣṇa-sambandhe. We should not give up anything. That is not Kṛṣṇa consciousness. That is not advice of Lord Kṛṣṇa in the Bhagavad-gītā. He never says Arjuna that "You give up this fighting and go to the Himalayas and sit down silently there to meditate." Never He advises. We are following that. As Kṛṣṇa says, as Kṛṣṇa advises to Arjuna, yuddhyasva mām anusmaran . . . so long you are in this material world, you have to fight, because this material world is called avidyā-karma-samjña anyā tṛtīyā śaktir iṣyate (CC Madhya 6.154).
This energy of the Supreme Personality of Godhead, material energy, it is called avidyā-karma-samjña. Here the position is everyone is ignorant, and he has to work for his maintenance. Even a small ant which requires a grain of sugar, he has to work also very hard. And the elephant, who eats hundred pounds at a time, he has also to work. Even a rich man, he has also to work, and a very poor man, he has also to work. Therefore this material energy is called avidyā-karma-samjña anya.
So our Kṛṣṇa consciousness philosophy is that we have to work, but we should work for the best bargain. That is our philosophy. And that is taught in Bhagavad-gītā. There are, according to Vedānta philosophy, there are five kinds of interest, or artha, pañcārtha. What is that? God: first of all to know what is God. Next, to understand what is jīva, or the living entity. Then, what is this material nature, or what is that spiritual nature. Īśvara, jīva, prakṛti. And then time—what is the time factor, past, present and future. And then there is karma, activity. These five things, primary principles of philosophical speculation or philosophical understanding, are very clearly stated in the Bhagavad-gītā: īśvara, jīva, prakṛti, kāla and activity.
So out of these five, īśvara, the Lord; the jīva, the living entity—the nature, prakṛti; and the time factor, as well as the . . . they are eternal. They are not temporary. But the material energy is temporary. Actually what is the difference between material energy and spiritual energy? The difference is material energy, the consciousness is different, and in the spiritual energy, the consciousness is Kṛṣṇa. That is the difference.
Just like the sky. The sky is one, but when there is cloud, it is called clouded sky. The sky is the same. The clouded sky is not different from the original sky, but the cloud has come and has covered the sun. Not the sun—it is not the actual term—the cloud has covered my eyes. The cloud cannot cover the sun. The sun is fourteen hundred times . . . fourteen hundred thousands of times bigger than the earth. Now, how a cloud spreading over, say, one hundred miles or two hundred miles can cover the sun? It is not possible. It covers the eyes of us who are within one hundred and two hundred miles.