In the first excerpt, Lydia Forbes illustrates Shakespeare's theme of disguise versus self-deception throughout the story of Viola. Forbes also maintains that Olivia is a reasonable woman and perceives Viola to be a match for her in independence and wit, yet Olivia confuses Viola and Sebastian because of her deeper intuitive sense. In the second selection, Lewis positions Antonio as a Christ figure against which Viola's moral growth, the central concern of the play, is measured throughout Twelfth Night. Viola demonstrates sacrificial qualities early in the play, but they only come to fruition through her service and ultimate sacrifice to Orsino. Douglas Parker, in the third excerpt, outlines the parallels between Olivia and Viola in Twelfth Night, regarding them as non-genetic twins. He begins by describing the similarities between the characters: their loss of fathers and brothers, their respective disguises, and their pursuit of unrequited love.