Line 296. What arguement does Elizabeth use to try to persuade Mr.Hooper to remove his veil?

Hooper begs her to remain with him regardless of the veil; she asks to see his face...... she argues she'll stay if he'll allow her to see him but once.

"Have patience with me, Elizabeth!" cried he, passionately. "Do not desert me, though this veil must be between us here on earth. Be mine, and hereafter there shall be no veil over my face, no darkness between our souls! It is but a mortal veil--it is not for eternity! O! you know not how lonely I am, and how frightened, to be alone behind my black veil. Do not leave me in this miserable obscurity forever!"

"Lift the veil but once, and look me in the face," said she.