As we have got here in this material world, to maintain this body I require to eat, I require to sleep, I require to satisfy my senses and I require to defend—the four necessities. Āhāra-nidrā-bhaya-maithunaṁ ca. And spiritual body means these four kinds of bodily demands nil, no more. That is spiritual life. That means no eating, no sleeping, no sex and no defense. That Gosvāmīs, six Gosvāmīs in Vṛndāvana, they practiced it. Nidrāhāra-vihārakādi-vijitau. They conquered over sleeping, eating, mating and defending. Nidrā means sleeping, āhāra means eating, vihāra means sex. Nidrāhāra-vihārakādi-vijitau. Conquered.
So this is the advancement of spiritual life. When we conquer over these things, that means we have come to the spiritual platform. So, so long we have got this material body, it is not possible, but try to minimize. Try to minimize. Therefore Śrīla Raghunātha dāsa Gosvāmī . . . He was very rich man's son. His father's income, five hundred years ago, was twelve hundred thousand rupees. So now, you know, the exchange is . . . What is the exchange today? It is at least five hundred times increased. Anyway, that Raghunātha dāsa Gosvāmī, when left home . . . His father and uncle was very strictly observing. He was given very nice, beautiful wife and very beautiful house. But he was not very much satisfied. He wanted to join Caitanya Mahāprabhu. So his father was very strictly keeping guard, that "This boy may not go out," just like some of your parents do. (laughter) So . . . But this cannot be checked. So Raghunātha dāsa Gosvāmī, after all, by some tricks—after all, he was very intelligent, rich man's son—he went away to Caitanya Mahāprabhu. And his mother was advising to his father that "Why don't you handcuff this boy?" So his father was saying that "I have already handcuffed him with such beautiful wife and such beautiful residence, and he has opened this. Now what this material handcuff will do?" So anyway, he left father's home and approached Caitanya Mahāprabhu when He was in Jagannātha Purī, and he was entrusted to Svarūpa Dāmodara Gosvāmī, Caitanya Mahāprabhu's secretary, to take care of him.