Lucio greets her in a somewhat jocular tone but becomes sober upon learning that she is the Isabella he is seeking:
I would not--though 'tis my familiar sin
With maids to seem the lapwing and to jest,
Tongue far from heart--play with all virgins so:
I hold you as a thing ensky'd and sainted,
By your renouncement an immortal spirit,
And to be talk'd with in sincerity,
As with a saint.
(31-37)
He speaks to her throughout in a respectful tone, using poetry, not prose. Isabella is a devout woman, capable of inspiring respect even in Lucio, who before and after this scene shows himself a thoroughly disrespectful man with more wit than virtue.
