In this book Douglas Ehring shows the inadequacy of received theories of causation and, introducing conceptual devices of his own, provides a wholly new account of causation as the persistence over time of individual properties, or "tropes".

Properties and objects are everywhere. We cannot take a step without walking into them; we cannot construct a theory in science without referring to them. Given their ubiquitous character, one might think that there would be a standard metaphysical account of properties and objects, but they remain a philosophical mystery. Douglas Ehring presents a defense of tropes--properties and relations understood as particulars--and of trope bundle theory as the best accounts of properties and objects, and advocates a specific brand of trope nominalism, Natural Class Trope Nominalism. This position rejects the existence of universals, and holds that the nature of each individual trope is determined by its membership in various natural classes of tropes (in contrast with the view that a trope's nature is logically prior to those class memberships).
The first part of the book provides a general introduction and defense of tropes and trope bundle theory. Ehring demonstrates that there are tropes and indicates some of the things that tropes can do for us metaphysically, including helping to solve the problems of mental causation, while remaining neutral between different theories of tropes. In the second part he offers a more specific defense of Natural Class Trope Nominalism, and provides a full analysis of what a trope is.

Properties and objects are everywhere. We cannot take a step without walking into them; we cannot construct a theory in science without referring to them. Given their ubiquitous character, one might think that there would be a standard metaphysical account of properties and objects, but they remain a philosophical mystery. Douglas Ehring presents a defense of tropes-properties and relations understood as particulars-and of trope bundle theory as the best accounts of properties and objects, and advocates a specific brand of trope nominalism, Natural Class Trope Nominalism. This position rejects the existence of universals, and holds that the nature of each individual trope is determined by its membership in various natural classes of tropes (in contrast with the view that a trope's nature is logically prior to those class memberships). The first part of the book provides a general introduction and defense of tropes and trope bundle theory. Ehring demonstrates that there are tropes and indicates some of the things that tropes can do for us metaphysically, including helping to solve the problems of mental causation, while remaining neutral between different theories of tropes. In the second part he offers a more specific defense of Natural Class Trope Nominalism, and provides a full analysis of what a trope is.

This study is about what matters in survival-about what relation to a future individual gives you a reason for prudential concern for that individual. For common sense there is such a relation and it is identity, but according to Parfit common sense is wrong in this respect. Identity is not what matters in survival. In What Matters in Survival, Douglas Ehring argues that this Parfitian thesis does not go far enough. The result is the highly radical view "Survival Nihilism," according to which nothing matters in survival. Although we generally have motivating reasons to have prudential concern, and perhaps even indirect normative reasons for such concerns there is no relation that gives you a basic, foundational normative reason for prudential concern. This view goes beyond what Parfit calls the "Extreme View." It is the "More Extreme View" and is in effect something like an error theory about prudential reason as a special kind of normative reason.