[...] There are many classes of men in society—some men are engineers, some are medical practitioners, some are chemists, tradesmen, businessmen, and so on. These varieties of classes are not to be determined by birth, however, but by quality. No such thing as the caste-by-birth system is sanctioned by the Vedic literature, nor do we accept it. We have nothing to do with the caste system, which is also at present being rejected by the public in India. Rather, we give everyone the chance to become a brahmana and thus attain the highest status of life.
Because at the present moment there is a scarcity of brahmanas, spiritual guides, and ksatriyas, administrative men, and because the entire world is being ruled by sudras, or men of the manual laborer class, there are many discrepancies in society. It is to mitigate all these discrepancies that we have taken to this Krishna consciousness movement. If the brahmana class is actually reestablished, the other orders of social well-being will automatically follow, just as when the brain is perfectly in order, the other parts of the body, such as the arms, the belly, and the legs, all act very nicely.
The ultimate goal of this movement is to educate people in how to love God. Caitanya Mahaprabhu approves the conclusion that the highest perfection of human life is to learn how to love God. The Krishna consciousness movement has nothing to do with the Hindu religion or any system of religion. No Christian gentleman will be interested in changing his faith from Christian to Hindu. Similarly, no Hindu gentleman of culture will be ready to change to the Christian faith. Such changing is for men who have no particular social status. But everyone will be interested in understanding the philosophy and science of God and taking it seriously. One should clearly understand that the Krishna consciousness movement is not preaching the so-called Hindu religion. We are giving a spiritual culture that can solve all the problems of life, and therefore it is being accepted all over the world.
The Science of Self Realization
by His Divine Grace A. C. Bhaktivedanta Swami Prabhupada
Chapter Three – Discovering the Roots
The Immortal Nectar of the Bhagavad-gita