I am excessively slothful, and wonderfully industrious-by fits. There are epochs when any kind of mental exercise is torture, and when nothing yields me pleasure but the solitary communion with the 'mountains & the woods'-the 'altars' of Byron. I have thus rambled and dreamed away whole months, and awake, at last, to a sort of mania for composition. Then I scribble all day, and read all night, so long as the disease endures.