Endless difficulties must result from such a course; the arrangements for bringing up baggage and reinforcements would have to be cancelled, and aimless marches might impair the confidence of the troops in their commanders. "The Franco-German War of 1870-71" by Count Helmuth, von Moltke

First, notwithstanding the proverb that constant dropping will wear away a stone, you may set your mind at rest that these people never will- never would, in hundred years- impair your ground with Miss Havisham, in any particular, great or small. "Great Expectations" by Charles Dickens

It will tend also to impair that habit of readiness and quickness which it is necessary to cultivate in order to be agreeable. "The Laws of Etiquette" by A Gentleman

Whether therefore it be not evidently the interest of the people of England to encourage rather than to oppose a national bank in this kingdom, as well as every other means for advancing our wealth which shall not impair their own? "The Querist" by George Berkley