Men are four: He who knows not and knows not he knows not, he is a fool – shun him. He who knows not and knows he knows not, he is simple – teach him. He who knows and knows not he knows, he is asleep – wake him. He who knows and knows he knows, he is wise – follow him!
I have not read this book yet. I got it at the Summit Worldview Campus in Manitou Springs, Colorado. J. P. Moreland is well known.