Full Idea
Some 'thicker' ethical notions, such as 'treachery', 'promise', 'brutality' and 'courage', seem to express a union of facts and values.
Gist of Idea
Some ethical ideas, such as 'treachery' and 'promise', seem to express a union of facts and values
Source
Bernard Williams (Ethics and the Limits of Philosophy [1985], Ch. 8)
Book Reference
Williams,Bernard: 'Ethics and the Limits of Philosophy' [Fontana 1985], p.129
A Reaction
The onus does seem to be on the followers of Hume to disentangle what the rest of us have united. They may, of course, manage it.