Abstract

The paper is devoted to the interpretation of one of the most important passages in modern Anglophon philosophy: III.1.3 of Treatise of Human Nature by David Hume. The author considers the problem of its meaning at an angle of the standard interpretation, which can be summed up in a dictum: ‘no ought from is’ (so called “Hume’s Guillotine”). The author outlines four possible approaches to this putative meaning of the Treatise passage and weighs arguments for them. The investigation, based mainly on the strategies by Arthur Prior, Charles Pigden and John Searle, allows to defend two approaches regarding Hume’s putative proposal of is/ought gap: /1/ the idea of logical autonomy of moral discourse, making strong rationality of deduction from is to (non-trivial) ought invalid, together with /2/ the possibility of weak rational (justified) inference from is to ought. However, the comparison of these two accounts with the guts of Humean philosophy as such (critical skepticism, fallibilism, ethical noncognitivism) makes the author prone to give a priority to the latter.