The plane was going to crash, but it didn't. Johnny was going to bleed to death, but he didn't. Geach sees here a changing future. In this paper, I develop Geach's primary argument for the (almost universally rejected) thesis that the future is mutable (an argument from the nature of prevention), respond to the most serious objections such a view faces, and consider how Geach's view bears on traditional debates concerning divine foreknowledge and human freedom. As I hope to show, (...) Geach's view constitutes a radically new view on the logic of future contingents, and deserves the status of a theoretical contender in these debates. (shrink)

Relative-identity theories of the Trinity and Incarnation are worth another look. But not all such theories are the same. One important difference among them concerns restricted quantification. Peter Geach proposes two theses: the sortal relativity of identity and the irreducibility of restricted quantification. Every relative-identity theory of the Trinity and Incarnation applies Geach’s first thesis. But only what I call “the Geachian theory” applies both theses. I argue that any such Geachian theory faces significant theoretical disadvantages. Towards the end, I (...) propose a closely related but non-Geachian relative-identity theory that doesn’t share those theoretical disadvantages. (shrink)

Skeptical theism is a popular response to the evidential problem of evil, but it has recently been accused of proving too much. If skeptical theism is true, its detractors claim, then we not only have no good reason for thinking that God’s reasons for action should be available to creatures like us, but we also have no good reason for thinking that the reasons which govern how we ought to act should be available to creatures like us. And given this (...) ignorance, we would be morally paralyzed, unable to decide what we ought to do in ordinary situations that call for a moral decision. In this paper, I present a simple solution to this problem of moral paralysis by drawing on Peter Geach’s now famous argument for the attributivity of “good.”. (shrink)

Contemporary accounts of the Trinity and Incarnation sometimes employ aspects of Peter Geach's theory of relative identity. Geach's theory provides an account not merely of identity predicates, but also proper names and restricted quantification. In a previous work I developed an account of the doctrines of the Trinity and Incarnation incorporating these three aspects of Geach's theory and tried to show how each might contribute to our understanding of the doctrines. Joseph Jedwab has recently argued that my account—or any that (...) employs Geach's treatment of restricted quantifiers—leads to serious doctrinal errors. I reply to his criticisms. (shrink)

‘Past vacillators’ believe that what was once the case may change over time. This has obvious applications to the possibility of changing the past via time travel. ‘Future vacillators’ believe that some things will happen and yet, later, will not. Further to issues in time travel, future vacillation has applications when it comes to ‘Geachian’ views about the open future. This paper argues that if you deny that the ‘earlier than’ and ‘later than’ relations are converses of one another then (...) you can develop metaphysical systems underpinning the possibility of such vacillation. (shrink)

Several passages in documents that have authority for religious believers, such as the Bible, suggest that God sometimes repents. Few philosophers and theologians, however, have embraced the thought that God repents. The primary reason for rejecting this idea seems to be that repenting conflicts with being perfectly good and being omniscient, properties that are characteristically ascribed to God. I suggest that the issue can well be approached in terms of a paradox: it seems simultaneously (i) that God repents (this is (...) what the Bible suggest), (ii) that God is omnibenevolent, and (iii) that he is omniscient. I show that these three theses, on a traditional understanding of the divine attributes of omnibenevolence and omniscience, lead to a contradiction. I critically discuss two attempts to dissolve this paradox: open theism and Geachianism. Next, I propose a different approach: even though God has full knowledge of the future free actions of his creatures, he does not have full knowledge of all his own future free actions. I show how on this alternative line of thought, God can simultaneously be said to be omniscient, perfectly good, and a God who sometimes repents. Finally, I defend this account of divine repentance against several objections and show what some of the implications are. (shrink)

The purpose of this paper is threefold. First, I visit the Fogelin–Geach-dispute, criticizeMiller''s interpretation of the Geachian notationN(x:N(fx)) and conclude that Fogelin''s argumentagainst the expressive completeness of the Tractariansystem of logic is unacceptable and that the adoptionof the Geachian notation N(x:fx) would not violate TLP5.32. Second, I prove that a system of quantificationtheory with finite domains and with N as the solefundamental operation is expressively complete. Lastly, I argue that the Tractarian system is apredicate-eliminated many-sorted theory (withoutidentity) with finite domains (...) and with N as the solefundamental operation, and thus is expressivelycomplete. (shrink)