However, granted these permanent difficulties, there are others which may be reduced or made to disappear. Granted that we have to organize our minds into a whole, we can see the general plan on which we should aim at organizing it. We must aim first at having no barriers between different parts of the mind. Every attempt must be made in the education of children to prevent there being a stigma attached to one whole section of mental life, and so to avoid its partial or total dissociation from the rest. On the other hand, the absence of barriers does not imply the absence of any relation of subordination or dominance of one part to another. One of the most important biological generalizations is that progressive evolution is accompanied by the rise of one part to dominance and, whenever there are many parts to be considered, by the arrangement of the rest in some form of hierarchy, each part being subordinate to one above, dominant to one below. It is such a hierarchy which we must try to construct in our mental organization. It is obviously impossible here to go into the whole question of values and ideals, but it is clear to any one who has given the briefest reflection to the subject that there are certain values, æsthetic, intellectual, and moral, which are ultimate for the mind of man, certain ideals--of truth and honesty, intellectual satisfaction, righteousness or at least freedom from the sense of sin or guilt, completeness and self-realization, unselfishness and serviceableness and so forth--which (though perhaps in varying proportions) are by common consent accepted as the highest: and further that the greater the attempt to deepen and broaden these, to increase their mental intensity and to widen their range and association, the more they tend to emerge into something increasingly unitary, in which it is seen that honesty is also beautiful and useful, that intellectual satisfaction is in the long run serviceable to the community, that unselfishness to be effective requires thought and will besides mere altruistic emotion, that one of the greatest aids to any genuine righteousness is an æsthetic love of beautiful things that prevents our doing ugly things, and so _ad infinitum_. The proper way, then, to build the sex instinct into the mental system is not to have its stimulation cause a merely physiological and uninhibited desire for its gratification, nor to bring about a forcible repression and an attempt to break connection between it and the other parts of the mind.