When the Ego wants to think it drives blood, at the proper heat, to the brain. The old Norsemen and the Scots recognized that the Ego is in the blood. At the present time the blood of each individual contains only the pictures of his own individual experiences and the subconscious mind has access to them. The greater the mixture of blood the less the indwelling Ego can be influenced by the Race or Family Spirits. Unmixed blood gave us ancestral assistance when we needed it.
Mixed blood makes for independence of outside help.
The heat of the blood is the vantage ground of the Ego, and the Lucifer Spirits from Mars aid in maintaining this heat by dissolving iron, a Mars metal, in our blood to attract oxygen, a solar element. The proper heat for the real expression of the Ego is not present until the mind is born from the macrocosmic Concrete Mind, when the individual is about twenty-one years old. Statutory law also recognizes this as the earliest age when the man is deemed fit to exercise a franchise. In the lower order of animals blood is fluid and nucleated. The nuclei, centers of life, are the vantage ground of a Group Spirit.