When any creativity becomes useful, it is sucked into the vortex of commercialism, and when a thing becomes commercial, it becomes the enemy of man.
Source: In The New Yorker, 16 Sep 1961.
-- Arthur Miller, (Oct 17 1915-2005), US dramatist; He dealt with social and political problems in Death of a Salesman, 1950 and The Crucible, 1953.