] I wonder whether the concept of sensibility -- quite a literary/philosophic issue back then -- at all connotes what we think of as "sensitivity." Having powerful feelings powerfully expressed (think Romantic poetry and music) is, I think, what is meant, not necessarily having tender or caring feelings for others. If this is the case (someone correct me if I'm off on this), then what JA is doing is not an ironical twist on the idea of 'feelings' but just pointing out by contrast the fallacy of sensibility in relation to other kinds of feelings. (We've probably all known people whose emotional reactions were intense and dramatic and yet tuned mainly to their own psyche.)
Emotions run amok...Sensibility therefore does not exclude selfishness..