One should know, however, that all the necessities of life that the human society requires are supplied by the demigod agents of the Lord. No one can manufacture anything. Take, for example, all the eatables of human society. These eatables include grains, fruits, vegetables, milk, sugar, etc., for the persons in the mode of goodness, and also eatables for the nonvegetarians, like meats, etc., none of which can be manufactured by men. Then again, take for example heat, light, water, air, etc., which are also necessities of life—none of them can be manufactured by the human society. Without the Supreme Lord, there can be no profuse sunlight, moonlight, rainfall, breeze, etc., without which no one can live. Obviously, our life is dependant on supplies from the Lord. Even for our manufacturing enterprises, we require so many raw materials like metal, sulphur, mercury, manganese, and so many essentials—all of which are supplied by the agents of the Lord, with the purpose that we should make proper use of them to keep ourselves fit and healthy for the purpose of self-realization, leading to the ultimate goal of life, namely, liberation from the material struggle for existence. This aim of life is attained by performance of yajnas. If we forget the purpose of human life and simply take supplies from the agents of the Lord for sense gratification and become more and more entangled in material existence, which is not the purpose of creation, certainly we become thieves, and therefore we are punished by the laws of material nature. A society of thieves can never be happy because they have no aim in life. The gross materialist thieves have no ultimate goal of life. They are simply directed to sense gratification; nor do they have knowledge of how to perform yajnas. Lord Caitanya, however, inaugurated the easiest performance of yajna, namely the sankirtana-yajna, which can be performed by anyone in the world who accepts the principles of Krsna consciousness.