In the book The Count of Monte Cristo, what does Faria say will happen after the third attack? How does Edmond try to encourage him?

Faria believes the third attack may end his life. Edmond encourages him to relax and tells his story after he has rested. 

Faria:

"On the contrary, it is a matter of the utmost importance, Edmond!" replied the old man. "Who knows if to–morrow, or the next day after, the third attack may not come on? and then must not all be over?

Dantes:

"My dear friend, your attack has, perhaps, fatigued you; had you not better repose awhile? To–morrow, if you will, I will hear your narrative; but to–day I wish to nurse you carefully. Besides," he said, "a treasure is not a thing we need hurry about."