Cecil Graham: What is a cynic?
Lord Darlington: A man who knows the price of everything and the value of nothing.
Source: Lady Windermere's Fan, act 3. The same formula was used in The Picture of Dorian Gray. See Wilde on Value.
-- 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.