Here is a link to part 1 of a piece on the psychology of **** Cheney (part 2 seems to be missing):

http://www.truthout.org/docs_2006/071107B.shtml

The part that particularly interested me was the effect that his wife, Lynne Cheney, may have had on him. In this connection, here is a link to the somewhat racy novel "Sisters" that she wrote, and is apparently none too keen on acknowledging. This is a distinctly non-official site:

http://www.whitehouse.org/administration/sisters.asp

You may say that the analysis of Cheney's psychology is speculation. Of course, to some extent that is true. I don't know how one could "prove" this kind of thing to any amount of certainty. But if it is true, it is an illustration of in what roundabout ways the development of a person's psychology can have consequences -- for instance, can play a part in the production of the deaths of tens (or more) of thousands of people.

But then, we already knew that.

I can think of many other people whose psychology played a large part in forming the modern world, for good or not so good. Henry Ford, for instance; FDR; maybe George III; of course one of the greatest of them all, Adolf Hitler; in the present instance Saddam Hussein...