Śrīmad-Bhāgavata says that if you want to be free... Free means just like you are trying to go to the moon planet by so many mechanical arrangements, but if you are free spiritually, then you can go any planet you like, immediately. The yogis, those who are perfect yogis... Not these nonsense yogis. Those who are perfect yogis, they can go at their will any planet they like. That is yogic perfection. When a yogi becomes perfect, he does... He does not die. "Die," this word is not actually applicable. When he leaves this body... Actually, nobody will die. We simply quit this body and accept another body. We are forced by the laws of nature according to karma. By practice of yoga system we can avoid the forcible nature's law, but we can leave this body according to our sweet will, not being forced by the nature's law. Just like Bhīṣmadeva. Bhīṣmadeva, he knew this yoga practice. Therefore he was not to be killed. Unless he desired to die, nobody could kill him. So yogis... Still there are many yogis in India, they are living for seven hundred years, or three hundred years, four hundred years. They consider not yet perfect. Not yet perfect. They are trying to make perfection of the yoga practice, and they look like young men, say, twenty-five years, thirty years old. But they are seven hundred years old, three hundred years old. There are still yogis. They are yogis. They have practiced yoga. Still they consider they are not perfect. The perfection will be when a yogi at his sweet will can leave this body and can go any planet he likes. Not only within this material universe, but also even, if he likes, he can go to the spiritual planet also. That is yoga.
Just like Durvāsā Muni. Durvāsā Muni traveled within this universe and beyond this universe within one year. That statement is there in the Śrīmad-Bhāgavatam. There was a misunderstanding between him and a devotee, Mahārāja Ambarīṣa. So for that reason he had to travel. He was attacked, and out of the fear of his life he had to travel to go from one planet to another, one planet to another to save his life. Ultimately, he had to go to the Viṣṇu planet. He was so powerful. And it is said that this space travel covered by Durvāsā Muni took only one year. So yoga practice is so... That is also a kind of freedom. We do not know what is freedom. Liberation, I am speaking on the point of liberation. But he was also not liberated, that Durvāsā Muni, although he could travel from one planet to another, another, another, even up to Viṣṇuloka. He was not liberated. He had to come back. Liberation means that you go to the spiritual realm, the spiritual sky, and you do not come back again. It is not like that, that after spending many millions of dollars you go to the moon planet and touch it and bring some sand, and you are satisfied. You see? Don't waste in that. If you go, live there. (laughter) Just like I came to the Western country to preach this Kṛṣṇa consciousness, now I am living. I am not after taking some money and bluffing and go away. No. I am standing here. I am facing, "Come on," any philosopher, any scientist, any religion, "Come on and see the beauty of Kṛṣṇa consciousness."
Prabhupāda: So that is going. Go in the moon planet. Don't come back. (laughter) Simply by touching, "Oh, we have done tremendous." What tremendous you have done? So that kind of freedom is not wanted. Freedom means wherever you like, you can go, you can stay, nobody can check. That is liberation. That is liberation.
So here it is said that if you want that sort of liberation, then mahat-sevāṁ dvāram āhur vimukteḥ (SB 5.5.2). If you want that sort of liberation, then associate with mahātmās, great souls. And if you want to be stuck up in this material world, then you associate with persons who are addicted to sense gratification. That's all. Two processes. If you be addicted to the process of sense gratification... Like animals. They have no other information. They are simply engaged in sense gratification: eating, sleeping, mating, and defending. That's all. Their business finished. They do not know anything else. If I call some animals... Why people are not taking part in this Kṛṣṇa consciousness? Because they are animals. They are appearing with four hands and legs, but they have been trained to become animals. So they cannot take. But we are trying to train them from animalism to humanism by associating with this Kṛṣṇa consciousness movement. This Caitanya Mahāprabhu's movement is to give chance to this animalistic civilization to associate with devotees and mahātmās so that they can also become devotee and mahātmā. You associate with mahātmā, you become mahātmā. You associate with debauch, you become debauch. Practical. We have taken from the debauchery condition all our disciples. But they are now mahātmās. It is possible. By this Kṛṣṇa consciousness movement we can turn debauch into mahātmā. That is possible. Caitanya Mahāprabhu's movement is so nice.