Full Idea
There is no evident rule for separating the information from the stylistic or other immaterial features of the sentences.
Gist of Idea
There is no rule for separating the information from other features of sentences
Source
Willard Quine (Philosophy of Logic [1970], Ch.1)
Book Reference
Quine,Willard: 'Philosophy of Logic' [Prentice-Hall 1970], p.4
A Reaction
There is no rule for deciding precisely when night falls, so I don't believe in night. I take a proposition, prima facie, as an answer to the question 'What exactly do you mean by that remark?' How do you extract logical form from sentences?