After he made up his mind to spend the rest of the war in the hospital, Yossarian wrote letters to everyone he knew saying that he was in the hospital but never mentioning why. One day he had a better idea. To everyone he knew he wrote that he was going on a very dangerous mission. "They asked for volunteers. It's very dangerous, but someone has to do it. I'll write you the instant I get back." And he had not written anyone since.

A man's head is his castle.

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?

Be glad you're even alive.' Be furious you're going to die.

The question is: what is a sane man to do in an insane society?

I don't think the 'what' distinguishes a good novel from a bad one but rather the 'how.'

The Texan turned out to be good-natured, generous and likable. In three days no one could stand him.