rationally

Collins’s picture of Hunsford and Rosings rationally softened; and Elizabeth perceived that she must wait for her own visit there, to know the rest.

They shook hands with great cordiality; and then, till her sister came down, she had to listen to all he had to say of his own happiness, and of Jane’s perfections; and in spite of his being a lover, Elizabeth really believed all his expectations of felicity to be rationally founded, because they had for basis the excellent understanding and super-excellent disposition of Jane, and a general similarity of feeling and taste between her and himself.