Prabhupāda: First of all you understand this, then bring second thing—that you have no duty. Your only duty is to surrender to Kṛṣṇa. Sarva-dharmān parityajya mām ekam (BG 18.66). That is your only duty. But because you are under the mental platform, you are creating duties. So . . . but that also must be finished after certain age. That is compulsory, that "You are very good, responsible man. All right, do your duty up to this. No more duty. No more duty." So this "duty," "no duty," this is our creation. We are under fully control of the nature. But we have created our mental concoction: "This is duty. This is good. This is bad." That is our mano-dharma. Real dharma is sarva-dharmān parityajya mām ekaṁ (BG 18.66). This is real dharma. And everything is mano-dharma, mental creation. Therefore the Bhāgavata in the beginning it is said that dharmaḥ projjhita-kaitavo 'tra (SB 1.1.2): "This false dharma is rejected." These are all false dharmas. Real dharma is to surrender to Kṛṣṇa. But it takes time. Therefore sat-saṅga is required. But actually real dharma is to become Kṛṣṇa conscious and do everything ānukūlyena kṛṣṇānuśīlanam (CC Madhya 19.167). What Kṛṣṇa wants, we must know it and do it. And this is real dharma.
Dr. Patel: How to know it?
Prabhupāda: You can know from Kṛṣṇa. Kṛṣṇa says in the Bhagavad-gītā. It is open to everyone. If you cannot understand, then go to guru. He will explain to you. "And how to know it?" you cannot say. "Keep to the left" is there. You cannot say that "I did not know the law." You have deviated.