I find this rather gnomic. Is he admonishing us to only say 'ought' in reference to existing parts of reality? Or simply classifying ought as a nonsensical notion?
Some more context, from the link:
...I consider the claim that 'ought' cannot be derived from 'is' to be a very remarkable claim. It suggests that there something . . . 'oughtness' . . . that is totally distinct and separate from things that exist in the real world . . . 'isness' . . . yet is supposed to have relevance in the real world. It is referred to as a part of the real-world explanations for the movement of real matter through space-time. Yet, we are told, this 'ought' or 'should' that we are making a reference to and that has these owers is somethin
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.