Mark Fox 
Qoheleth and His Contradictions [PDF ebook] 

Fox takes as his starting point the issues that Quoheleth“s interpreters have faced in their efforts to render the book faithfully, and in so doing, provides a new analysis of Quoheleth“s reasoning, logic, and means of expression. Fox reaches three key conclusions about the work: Quoheleth is primarily concerned with the rationality of existence; Quoheleth is not against wisdom or the wise, and finally: Quoheleth supports the grasping of inner experience as the one domain of human freedom.
These conclusions are supported by a thorough look at other analyses of Quoheleth.