[194] _The region vast_: The empyrean, or tenth and highest heaven of all. It is an addition by the Christian astronomers to the heavens of the Ptolemaic system, and extends above the _primum mobile_, which imparts to all beneath it a common motion, while leaving its own special motion to each. The empyrean is the heaven of Divine rest. [195] _Burning_: 'Flame of this burning,' allegorical, as applied to the limbo where Virgil had his abode. He and his companions suffer only from unfulfilled but lofty desire (_Inf._ iv. 41). [196] _A noble lady_: The Virgin Mary, of whom it is said (_Parad._ xxxiii. 16) that her 'benignity not only succours those who ask, but often anticipates their demand;' as here. She is the symbol of Divine grace in its widest sense. Neither Christ nor Mary is mentioned by name in the _Inferno_. [197] _Lucia_: The martyr saint of Syracuse. Witte (_Dante-Forschungen_, vol. ii. 30) suggests that Lucia Ubaldini may be meant, a thirteenth-century Florentine saint, and sister of the Cardinal (_Inf._ x. 120). The day devoted to her memory was the 30th of May. Dante was born in May, and if it could be proved that he was born on the 30th of the month the suggestion would be plausible. But for the greater Lucy is to be said that she was especially helpful to those troubled in their eyesight, as Dante was at one time of his life. Here she is the symbol of illuminating grace. [198] _Thy vassal_: Saint Lucy being held in special veneration by Dante; or only that he was one that sought light. The word _fedele_ may of course, as it usually is, be read in its primary sense of 'faithful one;' but it is old Italian for vassal; and to take the reference to be to the duty of the overlord to help his dependant in need seems to give force to the appeal. [199] _Rachel_: Symbol of the contemplative life. [200] _A flood, etc._: 'The sea of troubles' in which Dante is involved. [201] _Tears_: Beatrice weeps for human misery--especially that of Dante--though unaffected by the view of the sufferings of Inferno. [202] _My Guide, etc._: After hearing how Virgil was moved to come, Dante accepts him not only for his guide, as he did at the close of the First Canto, but for his lord and master as well. CANTO III.