Locke is often cited as a precursor to contemporary natural kind realism. However, careful attention to Locke’s arguments show that he was unequivocally a conventionalist about natural kinds. To the extent that contemporary natural kind realists see themselves as following Locke, they misunderstand what he was trying to do. Locke argues that natural kinds require either dubious metaphysical commitments (e.g., to substantial forms or universals), or a question-begging version of essentialism. Contemporary natural kind realists face a similar dilemma, and should (...) not appeal to Locke in their defense. (shrink)

In IV, xvii, 19–22 of his Essay, Locke employs Latin labels for four kinds of argument, of which one (ad hominem) was already in circulation and one (ad judicium) has never had much currency. The present proposal seeks to locate and clarify what Locke was aiming to describe, and to contrast what he says with some subsequent uses that have been made of these labels as if they named fallacies. Though three of the four kinds of argument that Locke picks (...) out are often less than decisive, he casts no aspersion on the legitimacy of their use in debate. (shrink)

Locke bases his moral and political philosophy on his doctrine of the ‘law of nature’. Scholars have debated the content and grounding of this law and its relationship to Christian theology. The ambiguities of the Lockean natural law’s content are traceable to an unclear grammatical construction in a crucial passage of the Treatises of Government, which can be resolved by following out a related set of arguments in that work. The ambiguities of the Lockean natural law’s grounding can then be (...) resolved by the hypothesis, strongly supported by textual evidence, that Locke relies tacitly on the reasoning of a parallel passage in Hobbes. Lockean natural law rests on neither atheistic nor specifically Christian premises but on a hypothetical natural theology. Locke’s conclusions from that natural theology represent an attempt to follow out Hobbesian logic while also tightening it up on one important point on which Hobbes himself appears to vacillate. (shrink)