It is true that you can't get from form to content, but it is also true that without form, content cannot emerge. When it comes to formulating a proposition, form comes first; forms are generative not of specific meanings, but of the very possibility of meaning. Despite the familiar proverb, it's not the thought that counts. Form, form, form, and only form is the road to what classical theorists called "invention," the art of coming up with something to say.
-Stanley Fish, How to Write a Sentence