This is diagrammatically and arguably thematically the most sophisticated of all the volumes of so-called supernotes that Mr O'Loughlin penned in the mid-late 'eighties and early 'nineties, and it rewards patient attention, even when the theories are less than wholly cogent or definitive. For the level of comprehensiveness in the quadruple structures is still such as to be beyond the range of most philosophies and thus allows for both a broadening and deepening of perspective to a degree which, at the very least, portends the possibility of a 'veritas' quite unprecedented in philosophical strivings after truth.