On May 31 he reached Frankfort.  Here the blow fell.  There occurred an incident which has become famous in literary history, and which, while it had some warrant on Frederick’s side, tells very poorly for that patron of literature.  No unlettered autocrat could have acted with less regard to the rights and proprieties of citizenship.

“Here is how this fine adventure came about,” writes Voltaire.  “There was at Frankfort one Freytag, who had been banished from Dresden and had become an agent for the King of Prussia....He notified me, on behalf of his Majesty, that I was not to leave Frankfort till I had restored the valuable effects I was carrying away from his Majesty.

“’Alack, sir, I am carrying away nothing from that country, if you please, not even the smallest regret.  What, pray, are those jewels of the Brandenburg crown that you require?’

“‘It be, sir,’ replied Freytag, ’the work of poeshy of the king, my gracious master.’

“‘Oh, I will give him back his prose and verse with all my heart,’ replied I, ’though, after all, I have more than one right to the work.  He made me a present of a beautiful copy printed at his expense.  Unfortunately, the copy is at Leipsic with my other luggage.’

“Then Freytag proposed to me to remain at Frankfort until the treasure which was at Leipsic should have arrived; and he signed an order for it.”

The volume which Frederick wanted he had doubtless good reason to demand, when it is considered that it was in the hands of a man who could be as malicious as Voltaire.  It contained a burlesque and licentious poem, called the “Palladium,” in which the king scoffed at everybody and everything in a manner he preferred not to make public.  Voltaire in Berlin might be trusted to remain discreet.  In Paris his discretion could not be counted on.  Frederick wanted the poem in his own hands.

There was delay in the matter; references to Frederick and returns; the affair dragged on slowly.  The package arrived.  Voltaire, agitated at his detention, ill and anxious, wanted to get away, in company with Madame Denis, who had just joined him.  Freytag refused to let him go.  Very unwisely, the poet determined to slip away, imagining that in a “free city” like Frankfort he could not be disturbed.  He was mistaken.  The freedom of Frankfort was subject to the will of Frederick.  The poet tells for himself what followed.

“The moment I was off, I was arrested, I, my secretary and my people; my niece is arrested; four soldiers drag her through the mud to a cheesemonger’s named Smith, who had some title or other of privy councillor to the King of Prussia; my niece had a passport from the King of France, and, what is more, she had never corrected the King of Prussia’s verses.  They huddled us all into a sort of hostelry, at the door of which were posted a dozen soldiers; we were for twelve days prisoners of war, and we had to pay a hundred and forty crowns a day.”