This book, one of the first full-length studies of the modalities to emerge from the debate to which Saul Kripke, David Lewis, Ruth Marcus, and others are contributing, is an exploration and defense of the notion of modality de re, the idea that objects have both essential and accidental properties. Plantinga develops his argument by means of the notion of possible worlds and ranges over such key problems as the nature of essence, transworld identity, negative existential propositions, and the existence (...) of unactual objects in other possible worlds. He also applies his logical theories to the elucidation of two problems in the philosophy of religion: the problem of evil and the ontological argument. (shrink)

This is a review of Keith Yandell's book.

In this paper, I argue that -- contrary to widely received opinion -- logical arguments from evil are well and truly alive and kicking.

A critique of Plantinga's free will defense. For an updated version of this critique, with a reply to objections from William Rowe and Alvin Plantinga, see my "The logical problem of evil: Plantinga and Mackie," in Justin P. McBrayer & Daniel Howard‐Snyder (eds.), The Blackwell Companion to the Problem of Evil, Wiley-Blackwell, 2013, pp. 19-33.

The vast amount of suffering in the world is often held as a particularly powerful reason to deny that God exists. Now, one of the world's most distinguished philosophers of religion presents his own position on the problem of evil. Highly accessible and sensitively argued, Peter van Inwagen's book argues that such reasoning does not hold: his conclusion is not that God exists, but that suffering cannot be shown to prove that He does not.

In this paper I outline and discuss the central claims and arguments of J. L. Mackie’s The Miracle of Theism. Mackie argues, in essence, that none of the traditional theistic arguments is successful taken either one at a time or in tandem, that the theist does nothave a satisfactory response to the problem of evil, and that on balance the theistic hypothesis is much less probable than is its denial. He then concludes that theism is unsatisfactory and rationally unacceptable. I (...) argue that he is mistaken in nearly all of his major contentions. (shrink)

How do we know that God exists? One of Britain's greatest 18th-century philosophers addresses the age-old question in this timeless dialogue. Equally captivating as a philosophical argument and as a work of literature, this classic is particularly relevant in terms of its criticism of the reasoning behind Intelligent Design.

Among the central theses defended in this paper are the following. First, the logical incompatibility version of the argument from evil is not one of the crucial versions, and Plantinga, in fostering the illusion that it is, seriously misrepresents claims advanced by other philosophers. Secondly, Plantinga’s arguments against the thesis that the existence of any evil at all is logically incompatible with God’s existence. Thirdly, Plantinga’s attempt to demonstrate that the existence of a certain amount of evil in the world (...) does not render improbable the existence of God involves both a false claim and a fallacious inference. (shrink)

The author replies to Michael Tooley's comments ('Alvin Plantinga and the argument from evil', Australasian journal of philosophy, December 1980) on his treatment of the argument from evil in The nature of necessity; he argues that Toole's remarks constitute at best a mere galimatias.

Plantinga’s Free Will Defense (FWD) employs the following proposition as a premise:◊TD. Possibly, every essence is transworld depraved.I argue that he fails to establish his intended conclusion because the denial of ◊TD is epistemically possible. I then consider an improved version of the FWD which relies on◊TU. Possibly, every essence is transworld untrustworthy.(The notion of transworld untrustworthiness is the might-counterfactual counterpart to Plantinga’s would-counterfactual notion of transworld depravity.) I argue that the denial of ◊TU is also epistemically possible and, therefore, (...) that the improved FWD fares no better than the original at establishing the compatibility of God and evil. (shrink)

Alvin Plantinga's free will defense is based on the idea of transworld depravity. Plantinga claims that if every essence suffers from transworld depravity, then it is not possible for God to actualize a world in which there is moral good but no moral evil. I describe possible worlds that imply it is impossible for every essence to suffer from transworld depravity. I then show how to modify the concept of transworld depravity to avoid this problem, and formulate an alternative free (...) will defense that is based on the concept of unobtainable worlds instead of transworld depravity. (shrink)

"Thousands of philosophers--from the ancient Greeks to modern thinkers--have defended atheism, but none more comprehensively than Martin.

No Abstract Alvin Plantinga's free will defense is based on the idea of transworld depravity. Plantinga claims that if an essence suffers from transworld depravity, then it is not possible for God to actualize a world in which the instantiation of that essence only does what is right. If every essence suffers from transworld depravity, then it is not possible for God to actualize a world in which there is moral good but no moral evil. I begin by describing possible (...) worlds that imply it is impossible for every essence to suffer from transworld depravity. I then show how to modify the concept of transworld depravity to avoid this problem, and to allow for the possibility that every essence suffers from transworld depravity. This new formulation of transworld depravity has an interesting consequence, and this leads to an alternative free will defense that is not based on the concept of transworld depravity. I introduce the concept of an unobtainable world, and use this to develop an alternative version of the free will defense that is preferable to one based on the concept of transworld depravity. (shrink)