1.
A cat actually thinks visibly. If you watch him jump on a shelf, the wish to jump and the action of jumping are one and the same thing... It's in exactly the same way that all Brook's exercises try to train the actor. The actor is trained to become so organically related within himself, he thinks completely with his body. He becomes one sensitive, responding whole... The whole of him is one.
John Heilpern
2.
But my relief that David Auburn's Proof is less about its ballyhooed higher mathematics than the fragility of life and love was matched by my delight in his fine and tender play. (...) Proof surprises us with its aliveness and intelligent modesty, and we have not met these characters before.
John Heilpern