Written things are not for speech; their form is literary; they are stiff, inflexible, and will not lend themselves to happy and effective delivery with the tongue-where their purpose is to merely entertain, not instruct; they have to be limbered up, broken up, colloquialized and turned into common forms of premeditated talk-otherwise they will bore the house and not entertain it.

The autobiography of Mark Twain: including chapters now published for the first time (ed. 1960)