There are 8,400,000 different types of body. So if we do not properly use this human form of body, if we become subjected to sinful life, then we get a different type of body, very . . . animal life, tree's life, plant's life, aquatic's life, insect life. Or even we are promoted to the higher standard of life, as in higher planets the demigods, the four principles of material miseries, namely birth, death, old age and disease, we cannot avoid, either in the higher planetary or in the lower planetary system. But if we want eternal life of bliss and knowledge, then we must endeavor in this life how to go back to home, back to Godhead. And such persons who are endeavoring for this purpose, they are called first-class men. And they are called brāhmaṇas, or the first-class men.
In the material world everyone is busy how to satisfy the senses. Nobody is interested to satisfy God. So in this condition of life we are misled, misled in this way, that we have got this human form of body, very nice body, and if we are misled—instead of giving service to the Lord, if we simply are engaged in the service of the senses—then we become subject to the karma, or fruitive activities. That means we get different types of body. There are 8,400,000 different types of body. So if we do not properly use this human form of body, if we become subjected to sinful life, then we get a different type of body, very . . . animal life, tree's life, plant's life, aquatic's life, insect life. Or even we are promoted to the higher standard of life, as in higher planets the demigods, the four principles of material miseries, namely birth, death, old age and disease, we cannot avoid, either in the higher planetary or in the lower planetary system. But if we want eternal life of bliss and knowledge, then we must endeavor in this life how to go back to home, back to Godhead. And such persons who are endeavoring for this purpose, they are called first-class men. And they are called brāhmaṇas, or the first-class men.
So society must be divided into four classes: first class, second class, third class, fourth class. That is general. They . . . those who are endeavoring for realizing God, they are first-class men. Those who are less intelligent—they are trying to rule over the material world—they are second-class men. And those who are engaged in producing food and cow protection, they are third class. And those who are useless for any of these three occupational duties, they are called fourth class. And those who are still lower than that, they are called fifth class, sixth class, like that.