Well, rarely ≠ never, but I just thought I'd go look for some examples - decided Oscar Wilde quotes would be a good place to start
A man can be happy with any woman, as long as he does not love her.
A true friend stabs you in the front.
All bad poetry springs from genuine feeling.
Ambition is the last refuge of the failure.
Just as examples. Admittedly I'm cherry-picking, but I'm 100% convinced that smugness or a sense of self-superiority is integral to "wit."
