Various Authors 
Routledge Library Editions: Metaphysics [PDF ebook] 

Reissuing works originally published between 1937 and 1992, this collection of original texts addresses the philosophical realm of metaphysics, not only ontology but the philosophy of science, religion and morals. The theory of values and the theory of absolutes are the subject of more than one volume, while others take a broader spectrum and outlay the history of the philosophical arguments. The nature of objects and questions of being and identity are addressed from very different perspectives. With some volumes by very eminent thinkers, this is a great addition to any collection on philosophy.