Unluckily for him, he accepted the offer; for the caliph, having ordered him next morning to be called, said: “Read again to me what you have read already; I cannot hear too often the promise that is made me--the completion of which I languish to obtain.” The old man forthwith put on his green spectacles, but they instantly dropped from his nose, on perceiving that the characters he had read the day preceding had given place to others of different import. “What ails you?” asked the caliph; “and why these symptoms of wonder?”--“Sovereign of the world!” replied the old man, “these sabres hold another language to-day from that they yesterday held.”--“How say you?” returned Vathek:--“but it matters not; tell me, if you can, what they mean.”--“It is this, my lord,” rejoined the old man: “‘Woe to the rash mortal who seeks to know that of which he should remain ignorant; and to undertake that which surpasseth his power!’”--“And woe to thee!” cried the caliph, in a burst of indignation: “to-day thou art void of understanding: begone from my presence, they shall burn but the half of thy beard, because thou wert yesterday fortunate in guessing:--my gifts I never resume.” The old man, wise enough to perceive he had luckily escaped, considering the folly of disclosing so disgusting a truth, immediately withdrew and appeared not again. But it was not long before Vathek discovered abundant reason to regret his precipitation; for, though he could not decipher the characters himself, yet, by constantly poring upon them, he plainly perceived that they every day changed; and, unfortunately, no other candidate offered to explain them. This perplexing occupation inflamed his blood, dazzled his sight, and brought on such a giddiness and debility that he could hardly support himself. He failed not, however, though in so reduced a condition, to be often carried to his tower, as he flattered himself that he might there read in the stars, which he went to consult, something more congruous to his wishes: but in this his hopes were deluded; for his eyes, dimmed by the vapours of his head, began to subserve his curiosity so ill, that he beheld nothing but a thick, dun cloud, which he took for the most direful of omens. Agitated with so much anxiety, Vathek entirely lost all firmness; a fever seized him, and his appetite failed. Instead of being one of the greatest eaters, he became as distinguished for drinking. So insatiable was the thirst which tormented him, that his mouth, like a funnel, was always open to receive the various liquors that might be poured into it, and especially cold water, which calmed him more than any other.