The difference between a fairly interesting writer and a fascinating writer is that the fascinating writer has a better nose for what genuinely excites him, he is hotter on the trail, he has a better instinct for what is truly alive in him. The worse writer may seem to be more sensible in many ways, but he is less sensible in this vital matter: he cannot distinguish what is full of life from what is only half full or empty of it. And so his writing is less alive, and as a writer he is less alive, and in writing, as in everything else, nothing matters but life.