There are forty-three virtually real world books -- plus one video presentation -- that can be accessed -- for free -- through this web site.
The material to which the following links will take you can be found -- for the most part -- (in the form of hard copies) among the extensive collection of books in the Harvard University library system, one of the premier academic research universities in the world. So, unless your standards are higher than those at Harvard, then, you might want to take a chance and download some of the books listed below ... especially given that all this will cost you is (1) the small amount of time that will be required to download whichever items you might like and, of course, (2) the time you spend reading through and critically reflecting on the perspective that is seeking to engage you by way of the books that are calling to you ever so faintly (yet persistently). All of the ideas in the following books are intended to serve as 'food for thought' ... bon appétit