Setting

The lake was still; there was no breeze. The two men sat together in the chairson the floating dock; Graff hooked his foot in the rope and pulled the raft in, then let it drift out, then pulled it in again. - Pg. 305

To me, this discription is very peaceful. Two people on a deck next to a calm lake with no breeze. Considering the circumstances, this situation is pretty ironic. Ender had destroyed the buggers and these two men are now relaxing. To me, this scene says that there are places of peace even during turmoil.