Here is a useful quote from Zinsser's "On writing well", a timeless guide to all such matters: > Keep your paragraphs short. Writing is visual—it catches the eye > before it has a chance to catch the brain. Short paragraphs put air > around what you write and make it look inviting, whereas a long chunk > of type can discourage a reader from even starting to read. > > But don't go berserk. A succession of tiny paragraphs is as annoying > as a paragraph that's too long. I'm thinking of all those midget > paragraphs—verbless wonders—written by modern journalists trying to > make their articles quick 'n' easy. Actually they make the reader's > job harder by chopping up a natural train of thought.