I once asked a veteran Grand Canyon river guide what he had learned after his decades of floating raft loads of tourists down the Colorado. At the time, he was surveying his current sunburned brood as they struggled to set up camp on the beach, and he replied in an instant: "You learn there's a jackass on every trip."
Then he grinned.
"And if you haven't figured out who it is by Day Five . . . it's you."
- from Truck, a Love Story by Michael Perry