Abstract

Current debates about reasons and reasoning often draw comparisons between epistemic and practical reasons and reasoning and presuppose substantial unity between the practical and epistemic domains. This stance seems to conflict with a stark Humean contrast between the two domains: With respect to practical reasons and reasoning, Hume highlights the role of impressions, especially the passions, in motivating and rationalizing action, while apparently downplaying the potential relevance of beliefs, reason, or reasons. With respect to epistemic reasons and theoretical reasoning, he urges us to proportion our belief to the evidence (EHU 10.4), which suggests a significant epistemic role for evidential reasons. My contribution ar-gues that there is nonetheless a convincing and interesting unified Humean account of reasons and reasoning across both domains. To present my case, I first narrow down the unity claim that I am interested in. I then closely engage with Hume’s claims in epistemology, the philos-ophy of action, and metaethics to develop the unified Humean account.