Art is parasitic on life, just as criticism is parasitic on art.
A critic is a man who knows the way, but can't drive the car.
A good drama critic is one who perceives what is happening in the theatre of his time. A great drama critic also perceives what is not happening.
Art and ideology often interact on each other; but the plain fact is that both spring from a common source. Both draw on human experience to explain mankind to itself; both attempt, in very different ways, to assemble coherence from seemingly unrelated phenomena; both stand guard for us against chaos.