Instruct: Classify Amazon reviews into positive or negative sentiment
Query: wonderfully written; wonderfully sad

Not a climber myself, I enjoy reading about challenging climbs. One of the first mountain climbing books I read as a child was about Mallory and Irvine on Everest. I also read about a Matterhorn disaster ("White Spider"?) The tragedy of what took place in May 1996 will be with me for a long, long time thanks to Jon Krakauer's powerful writing. Nevertheless, I hope to see the Imax film of Everest to see the mountain close up from the safety of the theater. Hats off to the Imax crew and all the others who helped in the rescue or who suffered and endured on the mountain. And hats off to Jon Krakauer for writing so convincingly of the climb and the emotions left in the wake of the tragedy. I hope amateur climbers will be more realistic about their goals in the future. Everest proved even the professionals don't know if they will come down from the peak.