I know, of course, how important it is not to keep a business engagement, if one wants to retain any sense of the beauty of life.
Source: Cecily, in The Importance of Being Earnest, act 2.
-- Oscar Wilde, (Oct 16 1856-1900), Anglo-Irish playwright, novelist; He was noted for his flamboyant witty, sophisticated plays, e.g., The Importance of Being Ernest, 1895.