"They're trying to kill me," Yossarian told him calmly.
"No one's trying to kill you," Clevinger cried.
"Then why are they shooting at me?" Yossarian asked.
"They're shooting at everyone," Clevinger answered. "They're trying to kill everyone."
"And what difference does that make?"
Yossarian explains to his friend why he is not crazy for thinking people are trying to kill him.
"There was only one catch and that was Catch-22, which specified that a concern for one's own safety in the face of dangers that were real and immediate was the process of a rational mind. Orr was crazy and could be grounded. All he had to do was ask; and as soon as he did, he would no longer be crazy and would have to fly more missions."
Doc Daneekas explains why he cannot ground either Yossarian or Orr due to insanity.
"Major Major never sees anyone in his office while he's in his office."
Sergeant Towser explains why Appleby can only go in to see Major Major when he is not in the office.
"'The enemy,' retorted Yossarian with weighted precision, 'is anyone who's going to get you killed, no matter which side he's on, and that includes Colonel Cathcart.'"
Yossarian defends his position that it does not matter who wins the war as long as he's alive.
- "There was a much lower death rate inside the hospital than outside the hospital, and a much healthier death rate. Few people died unnecessarily."
Why Yossarian prefers being inside the hospital to being outside.
"Colonel Cathcart was indefatigable that way, an industrious, intense, dedicated military tactician who calculated day and night in the service of himself."
This follows a description of Colonel Cathcart's insecurities about his power.
"Yossarian lost his nerve on the mission to Avignon because Snowden lost his guts."
The first reference to Snowden's death that starts to explain what happened.
"But, he won't help anybody. That's one of the reasons he'll go far."
Yossarian describing ex-PFC Wintergreen.
"The country was in peril; he was jeopardizing his traditional rights of freedom and independence by daring to exercise them."
Milo's admonition to Yossarian
"Man was matter, that was Snowden's secret."
This explains why Yossarian lost his courage after seeing Snowden's insides spill out all over the plane.