There is, for instance, only one page at the beginning of Runciman's three-volume History of the Crusades describing how the participants decided to begin four hundred years of wars, and then several thousand pages devoted to the routes, battles and other events which make up the "history" of the Crusades.

Psychohistory, as a science, will always be problem-centered, while history will always remain period-centered. They are simply two different tasks.

Sociologists and historians have avoided looking for the family sources of wars and social violence. Whenever a group produces murderers, the early parental relationship must have been abusive and neglectful. Yet this elementary truth has not even begun to be considered in historical research; just stating that poor mothering lies behind wars seems blasphemous.

Whole great chunks of written history are of little value to the psychohistorian, while other vast areas which have been much neglected by historians - childhood history, content analysis of historical imagery, and so on - suddenly expand from the periphery to the center of the psychohistorian's conceptual world, simply because his or her own new questions require material nowhere to be found in history books.

Indeed, my conclusion from a lifetime of psychohistorical study of childhood and society is that the history of humanity is founded upon the abuse of children. Just as family therapists today find that child abuse often functions to hold families together as a way of solving their emotional problems, so, too, the routine assault of children has been society's most effective way of maintaining its collective emotional homeostasis.

The evolution of culture is ultimately determined by the amount of love, understanding and freedom experienced by its children... Every abandonment, every betrayal, every hateful act towards children returns tenfold a few decades later upon the historical stage, while every empathic act that helps a child become what he or she wants to become, every expression of love toward children heals society and moves it in unexpected, wondrous new directions.

Written history may, in the course of its narrative, use some of the laws established by the various sciences, but its own task remains that of relating the essential sequence of historical action and, qua history, to tell what happened, not why.