ABSTRACT
How, in two thousand words or less, is one to review a book which even a cursory examination shows to be unprecedented, a book of considerable length by a thoughtful and tremendously equipped man who has spent sixteen years writing it? The only thing one can do is to indicate the value of the work and to show a way of approaching it with lessened perplexity. I say lessened perplexity, for a certain perplexity cannot wholly be removed from a reading of it and the present reviewer freely acknowledges that there is much in the book that he is still seeking explanation for.
