Material world is not required by me or you. We are spirit soul. We have no business in the material world. Just like we are living entities of the land. We have no business with the water. But if anyone wants to cross over the sea, he must have a well-built ship to cross over. Similarly, we spirit souls we have no business in this material world, but because we wanted to enjoy it, leaving the association of Kṛṣṇa, we have been given this ship, this body, to ply over the material ocean.
So if you know how to ply the ship over the ocean there is no, I mean to say, fear of being drowned. If you have got a good captain of the ship and the ship is well built, then you'll have no danger. So the captain is the spiritual master, and this body is a very good ship. This is . . . these are the examples given. We have to cross over this material ocean. So we must have a captain and good ship, and favorable air.
If the air is favorable, suppose you're going to the western side, and if the wind is blowing towards western side, it will automatically push your boat or ship. It will be favorable. If you go against the wind, it is difficult. So you have got a very good ship—this human form of body—and the captain is the spiritual master, and the favorable wind blowing, the instruction of the śāstras. So taking this opportunity, if you cross over this material ocean, then there is no difficulty.