But the haughty and somewhat stern regularity of Fergus's features was beautifully softened in those of Flora.

Their voices were also similar in tone, though differing in the key.

That of Fergus, especially while issuing orders to his followers during their military exercise, reminded Edward of a favourite passage in the description of Emetrius: -- whose voice was heard around, Loud as a trumpet with a silver sound.
That of Flora, on the contrary, was soft and sweet--'an excellent thing in woman'; yet, in urging any favourite topic, which she often pursued with natural eloquence, it possessed as well the tones which impress awe and conviction as those of persuasive insinuation.

The eager glance of the keen black eye, which, in the Chieftain, seemed impatient even of the material obstacles it encountered, had in his sister acquired a gentle pensiveness.

His looks seemed to seek glory, power, all that could exalt him above others in the race of humanity; while those of his sister, as if she were already conscious of mental superiority, seemed to pity, rather than envy, those who were struggling for any farther distinction.
Her sentiments corresponded with the expression of her countenance.