The grief of losing my father has come in waves over the years, as it does with most people. His love and devotion as a father provided my closest, most intimate relationship. Dad, and our time together, is in my bones. While reflecting on him, the memories themselves seem to boil down into certain 'essences of Dad.'
It has actually been suggested that warfare may have been the principle evolutionary pressure that created the huge gap between the human brain and that of our closest living relatives, the anthropoid apes. Whole groups of hominids with inferior brains could not win wars and were therefore exterminated.