Shepherd’s philosophy centers on her rejection of Hume’s arguments against the demonstrability of causal principles. According to Shepherd, the causal maxim—everything that begins to exist must have a cause—is demonstratively true. She begins her first major philosophical work with a proof of this maxim. While scholars have complained that the proof seems blatantly circular, a closer look at Shepherd’s texts and their Lockean background dispels this worry. Shepherd’s premises are motivated not by the causal maxim or her theory of causation, (...) but by a metaphysics that distinguishes between substances and affections and by an empirical understanding of a ‘beginning of existence.’. (shrink)

Mary Shepherd assigns reason a central role in her philosophical system, and so to understand that system we must understand her conception of reason. Does she, like Hume, take reason to be a mere matter of factual process that operates over independently contentful representations? Does she, like Descartes, take it to be a process that is intended to track the rational relations among such representations? Or does she, like Kant, take reason to be a structural feature of representations without which (...) they would not have content at all? I argue that Shepherd's understanding of reason is broadly Kantian. Reason is a causal process whereby non-representational sensible qualities are combined in order to form representations of objects as loci of causal powers. These representations represent their objects as the external, continuously and independently existing, causes of the sensible qualities from which they have been constructed, and also as having causal powers to combine with other objects to have other effects. These representations are not only the result of a process of reasoning, but are also constituted by the rational relations into which reason puts them. Reason is both the causal process that forms such representations, and the structure of those representations themselves. (shrink)

Shepherd appears to endorse something like the following biconditonal regarding qualities and objects. □(An object, O, exists ↔ Some bundle of qualities, Q1, Q2, … Qn exists). There is a growing consensus in the secondary literature that she also takes the right side of this biconditional to ground the left side. I.e. Shepherd is a bundle theorist who takes an object to be nothing but a mass of qualities, or causal powers. I argue here that despite appearances, this interpretation reverses (...) Shepherd's actual view. I.e. I argue that for Shepherd qualities, or causal powers, are grounded in the intrinsic constitutions of objects. In the case of "external objects", these intrinsic constitutions are unknowable to us; in the case of "internal objects", we have direct knowledge of them. (shrink)

This paper explores the role that Mary Shepherd's (1777–1847) acceptance of the so-called imago-dei thesis plays for her account of the human mind. That is, it analyses Shepherd's commitment to the doctrine that humans are created in the image of God, (see Gen. 1, 26–7) parts of which Shepherd quotes in Essays on the Perception of an External Universe (EPEU), 157, and the ways it informs her understanding of the human mind. In particular, it demonstrates how this thesis informs her (...) understanding of the cognitive and moral capacities of the human mind. In other words, I argue that her commitment to this thesis explains why she believes that human beings are capable of reaching the “higher acquirement of intelligence” and the “completion of virtuous habits” (EPEU 381). Thus, this paper highlights the relevance of Shepherd's theological assumptions to (the ever-growing number of) scholars interested in her understanding of the mind. (shrink)