Required Re-Reading 2: Books You Will Want to Return to - Non-Fiction

Our maverick English teacher returns with 75 more of THOSE books- the ones he goes back and re-reads, often more than once. This time he sticks to non-fiction. In order to keep the list manageable, he has excluded cookbooks, textbooks, self-help books, How-to and DYI manuals, and, reluctantly, biographies(which he will come back to in a later list.) . As always, this is a personal list, and is not meant to be taken for "Best Of..." or "Greatest Hits" compilation.