Stevenson's convictions were sometimes too complex for the binary political arena to which he devoted his life.

-Lehmann-Haupt, Christopher Charles Herbert
  In the NewYork Times, 31  Jul.

At a certain moment the canvas began to appear to one American painter after another as an arena in which to actörather than as a space in which to reproduce, re-design, analyze or 'express'an object, actual or imagined.What was to go on the canvas was not a picture but an event.

-Rosenberg, Harold
  'TheAmerican Action Painters', in Art News, no.51, Dec.