This article analyses Isabelle de Charrière and Jane Austen together in relation to the changing perception of humanity affecting European thinking at the end of the eighteenth century. Not only is Charrière’s rather lesser-known work likely to benefit from the comparison, but Austen’s novels also gain in philosophical depth when read alongside hers. Each one an outsider in her own world, Charrière and Austen wrote against the grain of inherited gender prejudices but also against the growing conservatism of binary orthodoxy around 1800. Adopting as writers a perspective freed from ‘feminine’ expectations, as opposed to the lady novelist embodied by the famous Isabelle de Montolieu, they endeavoured to invent characters and stories distinct from the pervasive definitions of the feminine and the masculine, giving readers the possibility of considering the shared humanity equally shaping men and women.