A central problem within an influential strand of recent philosophy of mind has been to explain the “conformity of mind to thing” that characterizes knowledge. John Haldane has argued that this problem can be best addressed by a development of Thomas Aquinas’s account of the “formal identity” of the knowing subject with the object known. However, such a development is difficult to present in a manner perspicuous to a contemporary audience. This paper seeks to present a persuasive account of formal (...) identity, taking sensory cognition of the individual object as the primary case for examination. Formal identity is initially explored usingthe notion of encoding, or the systematic transfer of information reflecting efficient and formal causal processes. The mathematical notion of “isomorphism” is thenemployed to describe precisely the features of encoding needed for formal identity. Forms are defined as formally identical if and only if they are isomorphic. (shrink)

This paper presents a reconstruction of the “existential argument” for the existence of God that seems implicit, if somewhat elusive, in the writings of Thomas Aquinas. The reconstructed argument corresponds to no single passage of Thomas’s but gathers and synthesizes arguments used by him throughout his writings. The paper then attempts to evaluate the argument’s soundness against the background of Thomas’s metaphysical principles. There is ample motivationfor desiring such an evaluation. John Haldane has recently described the existential argument as perhaps (...) Thomas’s “most original contribution to the search for theistic proofs.” Yet, ironically, several prominent Thomistic philosophers have denied the soundness, and indeed the very possibility, of any such existential argument, leveling criticisms based on textual issues in Thomas’s works, the limitations of apriori reasoning, and perceptions of circular reasoning. The paper will attempt to show that the criticisms formulated by these critics are unfounded. (shrink)

This paper presents a reconstruction of the “existential argument” for the existence of God that seems implicit, if somewhat elusive, in the writings of Thomas Aquinas. The reconstructed argument corresponds to no single passage of Thomas’s but gathers and synthesizes arguments used by him throughout his writings. The paper then attempts to evaluate the argument’s soundness against the background of Thomas’s metaphysical principles. There is ample motivationfor desiring such an evaluation. John Haldane has recently described the existential argument as perhaps (...) Thomas’s “most original contribution to the search for theistic proofs.” Yet, ironically, several prominent Thomistic philosophers have denied the soundness, and indeed the very possibility, of any such existential argument, leveling criticisms based on textual issues in Thomas’s works, the limitations of apriori reasoning, and perceptions of circular reasoning. The paper will attempt to show that the criticisms formulated by these critics are unfounded. (shrink)