"Sometimes when I was starting a new story and could not get it going ...I would stand and look out over the roofs of Paris and think, 'Do not worry . You have written before and you will write now. All you have to do is write one true sentence. Write the truest sentence you know.'"
Francine Prose then goes on to wonder what is 'true' in this context . She thinks that Hemingway may have, in fact. meant beautiful. But to me 'true' is the most meaningful. If something is true it is beautiful to me. It is accurate but, more importantly, it arouses in this reader an instant of recognition that is like Poincaré's luminescent idea. It's a kind of mental gasp of realisation that means, yes, that's it. That's it, exactly.
The rest of the chapter looks at sentence length; how a long sentence can work well, especially when used alongside shorter sentences. She also touches on the importance of rhythm and lyricism and suggests that sentences should be read out loud to check for meaning and cadence.