Is all human behavior based on self-interest? Many social and biological theories would argue so, but such a perspective does not explain the many truly heroic acts committed by people willing to risk their lives to help others. In The Heart of Altruism, Kristen Renwick Monroe boldly lays the groundwork for a social theory receptive to altruism by examining the experiences described by altruists themselves: from Otto, a German businessman who rescued over a hundred Jews in Nazi Germany, to Lucille, a newspaper poetry editor, who, armed with her cane, saved a young girl who was being raped. Mon.