Sanity vs. Insanity
Catch-22The recurring theme of who is truly crazy in a world gone mad.
increasing
Bearing strength in each event
decreasing
Yossarian's claim of insanity

The Paradox
The Argument
Yossarian claims he is crazy to avoid flying. Doc Daneeka explains Catch-22: wanting to avoid danger is sane, so he cannot be grounded.
The Label
Clevinger calls Yossarian crazy. Yossarian retorts that everyone around him is crazy. The question of sanity is central.
The Irony
The sane ones are those who want to live. The crazy ones are those who accept death. The war inverts normal values.
Major Sanderson's diagnosis

The Psychiatrist
The Sessions
Major Sanderson, a psychiatrist, interviews Yossarian. He diagnoses him with a split personality and a persecution complex.
The Contradiction
Sanderson says Yossarian is crazy, but also says he is not good enough for the Army. He sends him back to combat.
The Absurdity
The psychiatrist is more disturbed than Yossarian. He is obsessed with sex dreams. The line between sanity and insanity blurs.
Dunbar's disappearance

The Consequence
The Threat
Nurse Duckett warns Yossarian that they are going to "disappear" Dunbar. Dunbar is taken away.
The Meaning
Dunbar is disappeared because he is a threat to order. He sees too clearly. The system eliminates those who question it.
The Lesson
Sanity is dangerous. The mad world punishes those who are sane. Yossarian must pretend to be crazy to survive.
Early in the story, with Doc Daneeka
During Yossarian's hospital stay for his leg wound
After the soldier in white returns