Yet, as previously hinted, this omnitooled, open-and-shut carpenter, was, after all, no mere machine of an automaton. If he did not have a common soul in him, he had a subtle something that somehow anomalously did its duty. What that was, whether essence of quicksilver, or a few drops of hartshorn, there is no telling. But there it was; and there it had abided for now some sixty years or more. And this it was, this same unaccountable, cunning life-principle in him; this it was, that kept him a great part of the time soliloquizing; but only like an unreasoning wheel, which also hummingly soliloquizes; or rather, his body was a sentry-box and this soliloquizer on guard there, and talking all the time to keep himself awake.
From “The Carpenter,” Chapter 107 of Melville’s Moby-Dick.