With these feelings, it is not strange that he listened to his royal friend's request, that he should resign his places in the court of France, and accept that of chamberlain in Prussia, as well as a pension for his life and that of his niece, and that he should permanently fix himself in his royal friend's dominions; yet, while he accepted these offers, he had many qualms. Madame Denis, his niece, to whom he communicated his new plans, argued warmly against them. Her letter has not come down to us; but she evidently took a keen and true view of the annoyances and mortifications to which he might be exposed. She was acquainted with her uncle's irritable temper,--his unguarded conversation when carried away by the spirit of wit,--his vehemence when struggling against control. She felt, and truly, that a king accustomed to command was the last person to show indulgence for such foibles when they clashed with himself. She prophesied that Frederic would, in the end, be the death of his friend. Voltaire showed this letter to the king, and he, in answer, wrote one to the poet, the expressions of which won him entirely. "How," wrote Frederic, "could I cause the unhappiness of a man whom I esteem, whom I love, and who sacrifices for me his country, and all that is dear to man? I respect you as my master in eloquence,--I love you as a virtuous friend. What slavery, what misfortune, what change can you fear in a country where you are as much esteemed as in your own, and with a friend who has a grateful heart? I promise you that you shall be happy here as long as you live." Voltaire sent this letter to count d'Argental, whom he always named his guardian angel, as his apology for expatriating himself. "Judge," he writes, "whether I am excusable? I send you his letter,--you will think that you are reading one written by Trajan or Marcus Aurelius,--yet I am not the less agitated while I deliver myself over to fate, and throw myself, head foremost, into the whirlpool of destiny which absorbs all things. But how can I resist? How can I forget the barbarous manner with which I have been treated in my own country? You know what I have gone through. I enter port after a storm that has lasted thirty years. I enjoy the protection of a king; I find the conversation of a philosopher--the society of a delightful man--united in one, who, for the space of sixteen years, has exerted himself to comfort me in my misfortunes, and to shelter me from my enemies. All is to be feared for me in Paris; here I am sure of tranquillity: if I can answer for anything, it is for the character of the king of Prussia." He wrote with even more enthusiasm to his niece. "He is the most amiable of men; he is a king; it is a passion of sixteen years' standing; he has turned my head. I have the insolence to think that nature formed me for him. There is a singular conformity in our tastes. I forget that he is master of half Germany, and see in him only a good, a friendly man."