As a physical reaction, an art review, like a poem, should make the reader stop, take a breath or a moment, and look out of the train window at the passing landscape. 

Even if the reader is not on a train, able to stop and look out, this should be the metaphysical effect that is generated. When we read a well-written review, we should all find ourselves on that train carriage, taking that moment, sitting with a thought or an idea, as the world happens around you.