A. C. Bhaktivedanta Swami Prabhupada quotes - page 3
It is said in the sastras that the head of the body represents the brahmanas, the arms represent the ksatriyas, the abdomen represents the vaisyas, and the legs, beginning with the thighs, represent the sudras. The sudras are sometimes called black, or krsna. The brahmanas are called sukla, or white, and the ksatriyas and the vaisyas are a mixture of black and white. However, those who are extraordinarily white are said to have skin produced out of white leprosy. It may be concluded that white or a golden hue is the color of the higher caste, and black is the complexion of the sudras.
A. C. Bhaktivedanta Swami Prabhupada
We have seen many rich persons, many powerful persons, many famous persons, many beautiful persons, many learned and scholarly persons, and persons in the renounced order of life unattached to material possessions. But we have never seen any one person who is unlimitedly and simultaneously wealthy, powerful, famous, beautiful, wise and unattached, like Kṛṣṇa, in the history of humanity. Kṛṣṇa, the Supreme Personality of Godhead, is a historical person who appeared on this earth 5,000 years ago. He stayed on this earth for 125 years and played exactly like a human being, but His activities were unparalleled. From the very moment of His appearance to the moment of His disappearance, every one of His activities is unparalleled in the history of the world, and therefore anyone who knows what we mean by Godhead will accept Kṛṣṇa as the Supreme Personality of Godhead. No one is equal to the Godhead, and no one is greater than Him. That is the import of the familiar saying "God is great.
A. C. Bhaktivedanta Swami Prabhupada
Certainly we are not going to say these things about the negro people publicly; we have no distinction between black or white, or demon or demigod, but at the same time, so long as one is demon or demigod, we have to behave in the proper way. Just like Caitanya Mahaprabhu; He had no distinction between a tiger and a man. He was so powerful that He could convert even a tiger to dance. But so far as we are concerned, we should not imitate and go to some tiger and try to make him dance! But still, tiger is equally eligible like a man. So, you can understand that these talks are not for the public, as they have not got the ability to understand. Basically we have not got hatred for anyone, but when one is demoniac or atheistic, we should try to avoid their company. A preacher's business is to love God, to make friendship with devotees, to enlighten the innocent, and to avoid the demons. This principle we shall follow. But in higher devotional life, there is no such distinction.
A. C. Bhaktivedanta Swami Prabhupada