My dad's one true quest in life was for the Platonic ideal of peanut butter. And I remember one day he announced, with a look of utter transfiguration on his face, that he had found paradise on Earth in a jar with a yellow cap. And it was called Red Wing.
The ideological distance between Jim Webb and Bertrand Russell can be measured in light years. An author who reaches both of them exerts something like universal appeal.