"As toher younger daughters, she could not take upon her to say--she couldnot positively answer--but she did not know of any prepossession; hereldest daughter, she must just mention--she felt it incumbent on herto hint, was likely to be very soon engaged.
(Jane Austen - Pride and prejudice ) "It is particularly incumbent on those who never change their opinion,to be secure of judging properly at first.
(Jane Austen - Pride and prejudice ) Elizabeth, feeling it incumbent on her to relieve him from so unpleasanta situation, now put herself forward to confirm his account, bymentioning her prior knowledge of it from Charlotte herself; andendeavoured to put a stop to the exclamations of her mother and sistersby the earnestness of her congratulations to Sir William, in which shewas readily joined by Jane, and by making a variety of remarks on thehappiness that might be expected from the match, the excellent characterof Mr. Collins, and the convenient distance of Hunsford from London.
If,' reasonedMr. Winkle with himself--'if this Dowler attempts (as I have no doubthe will) to carry into execution his threat of personal violence againstmyself, it will be incumbent on me to call him out.