J. H. Gardiner, The Making of Arguments
“ In other words, where a figure of speech is a necessity of expression, where you cannot make your thought clear and impart to it the warmth of feeling with which it is clothed in your own mind except by a touch of imaginative color, then use a figure of speech, if one flashes itself on your mind. If you add it deliberately as adornment of your speech, it will strike a false note; if you laboriously invent it the effort will show. ”
