Here are some of my favorites:

[I]t is happy for you that you possess the talent of flattering with delicacy. (ch 14)

Mr. Collins had only to change from Jane to Elizabeth -- and it was soon done -- done while Mrs. Bennet was stirring the fire. (ch 15)

I profess myself one of those who consider intervals of recreation and amusement as desirable for everybody.

I consider the clerical office as equal in point of dignity with the highest rank in the kingdom -- provided that a proper humility of behaviour is at the same time maintained.

And last but definitely not least:
[Mr. Darcy] even paid me the compliment of saying that he was so well convinced of Lady Catherine's discernment as to be certain she could never bestow a favour unworthily. (ch 18)