"I have a high respect for your nerves. They are my old friends. I have heard you mention them with consideration these twenty years at least." (5); Mr. Bennet is being sarcastic with Mrs. Bennet here by saying he is basically "friends" with her nerves. He is being sarcastic as he makes it sound like a good thing almost. They have been married so long that he has grown accustomed to her nerves, and is just use to it.

 "If she should die, it would be a comfort to know..." (23); This statement by Mr. Bennet is satirical because of the use of 'death' and 'comfort' right next to each other. These are two words that never should, or do go together, and they contradict each other completely. He sarcastically exclaims it will be a comfort to know she was in pursuit of Charles Bingley even if she dies, which also underlines Mr. and Mrs. Bennets' value of wealth in a marriage.