[...] Statements of facts are after all statements, which presumes a number of questionable judgements: that those statements are worth making, perhaps more worth making than certain others, that I am the sort of person entitled to make them and perhaps able to guarantee their truth, that you are the kind of person worth making them to, that something useful is accomplished by making them, and so on. [...]
as an example, he contrasts so-called descriptive statements like "this cathedral was built in 1612" with value judgements like "this cathedral is magnificent" only to say that the difference between the two is a matter of degree