Peter Van Inwagen 
Material Beings [PDF ebook] 

"There is much to bee learned from this book…. Material Beings is a refreshing example of straight-on, full-speed metaphysics. Van Inwagen goes where his arguments lead himand they lead him to some remarkable places indeed."Philosophy and Phenomenological Research According to Peter van Inwagen, visible inanimate objects do not, strictly speaking, exist. In defending this controversial thesis, he offers fresh insights on such topics as personal identity, commonsense belief, existence over time, the phenomenon of vagueness, and the relation between metaphysics and ordinary language.