Paramahaṁsa: Purport: The material world is full of contamination, and one who is immunized by accepting prasādam of the Lord, food offered to Viṣṇu, is saved from the attack, whereas one who does not do so becomes subjected to contamination. Food grains or vegetables are factually eatables. The human being eats different kinds of food grains, vegetables, fruits, etc., and the animals eat the refuse of the food grains and vegetables, grass, plants, etc. Human beings who are accustomed to eating meat and flesh must also depend on the production of vegetation in order to eat the animals. Therefore, ultimately, we have to depend on the production of the field and not on the production of big factories. The field production is due to sufficient rain from the sky, and such rains are controlled by demigods like Indra, sun, moon, etc., and they are all servants of the Lord. The Lord can be satisfied by sacrifices; therefore, one who cannot perform them will find himself in scarcity—that is the law of nature.
Yajña, specifically the saṅkīrtana-yajña prescribed for this age, must be therefore performed to save us at least from scarcity of food supply."
Prabhupāda: Did you follow? So the only remedy is that you should perform yajña. And this yajña is, in this age, yajña, performance of yajña, is very costly affair. At the present moment, things are not available. So you should perform yajña. If you don't perform yajña, then nature will restrict supply and put so many impediments. That yajñād bhavati parjanyaḥ... (BG 3.14). If you regularly perform yajña, then there will be sufficient rainfall. There is sufficient water. Just like all around there is water. There is no scarcity of water. But you cannot touch it without God's intervention. The same water will be converted into cloud and will be distributed on the land, and the water again glide down to the reservoir of water. This is nature's way. But if you do not perform yajña, this machine will not work to get water from the sea, convert into cloud, and then distribute. This will be restricted.
Justin Murphy: But we must all perform yajña?
Prabhupāda: Yes, you have to perform yajña. And that yajña, at the present moment, is very easy, to... Saṅkīrtanaiḥ yajñaiḥ. It is recommended that we have to recognize the authority of the Lord, and in this age, simply by performing saṅkīrtana-yajña, He will be satisfied. Saṅkīrtana-yajña means to glorify the Lord in so many ways. We glorify the Lord His form, His activities, His name, His quality. So it is not difficult job. We can sit together, family-wise, community-wise, or in office, in factory. We can sit down together and glorify the Lord. Is it very difficult job?
Justin Murphy: You make it sound very, very simple of course.
Prabhupāda: Yes, then why don't you accept it?
Justin Murphy: Well, I for one might. But...
Prabhupāda: No, no, I am not talking about you.
Justin Murphy: No, no, sure, certainly, but imagine the man, as we have to consider, the men, the thousands of them on their tractors, at their bulldozers, hacking down natural forest...
Devotee: He says we have to consider the men who are working the machines to take down the forest for agriculture... Is that what you mean?
Justin Murphy: The point I'm making is that there are so many people in Australia who would have no time. They are too busy making money. They are too busy doing what...
Prabhupāda: But what you will do with money? If there is no grain, then will you eat money? (laughter)
Justin Murphy: Certainly not.
Prabhupāda: That is foolishness. That is foolishness. Money is not required. Required—food grains.