At Pemberley, Elizabeth Bennet encounters a picture of Mr Darcy:

What smiles of Mr Darcy does Elizabeth remember? One of Austen's most perspicacious critics captures a reader's difficulty at this point. ‘In Pemberley before Darcy's portrait Elizabeth trusts a likeness even over her own experience, or rather she invests this likeness with reordered memory’, Janet Todd writes. The smile on Darcy's face doesn't correspond to anything that, as far as the reader knows, Elizabeth has previously known about him, and she has to rethink her experience to recognise it. Elizabeth projects onto the portrait, Todd suggests, what she herself feels at this moment, recalling smiles that are ‘rather at odds’ with what the reader has previously understood about Darcy. Indeed, her ‘remembering’ of Darcy's smile is surprising because, though the novel has once or twice shown Elizabeth noticing a smile on his face, the reader has up to this point been left to assume that this merely confirms her long-established opinion that he is an ill-tempered man, and that these smiles are condescending, or worse. Yet here the implication clearly is that Darcy's smile is warm and attractive.