This is the coolest day thus far, reminding me that I have only a half-thick coat on. The easterly wind comes cold into my ear, as yet unused to it. Yet this first decided coolness—not to say wintriness—is not only bracing but exhilarating and concentrating [to] our forces. So much the more I have a hearth and heart within me. We step more briskly, and brace ourselves against the winter.