Dwight Schrute: In the wild, there is no health care. In the wild, health care is, 'Ow, I hurt my leg. I can't run. A lion eats me. I'm dead.' Well, I'm not dead. I'm the lion. You're dead.
Dwight Schrute: (After he didn't tip the sub man) Why tip someone for a job I'm capable of doing myself? I can deliver food. I can drive a taxi. I can, and do, cut my own hair. I did however, tip my urologist, because I am unable to pulverize my own kidney stones.