He watched with great anxiety the progress of affairs with regard to Italy.  At the beginning of May he wrote a long letter to Schleinitz, as he had done to Manteuffel, urging him to bold action; he recounted his experiences at the Diet, he reiterated his conviction that no good would come to Prussia from the federal tie—­the sooner it was broken the better; nothing was so much to be desired as that the Diet should overstep its powers, and pass some resolution which Prussia could not accept, so that Prussia could take up the glove and force a breach.  The opportunity was favourable for a revision of the Constitution.  “I see,” he wrote “in our Federal connection only a weakness of Prussia which sooner or later must be cured, ferro et igni.”  Probably Schleinitz’s answer was not of such a kind as to tempt him to write again.  In his private letters he harps on the same string; he spent June in a visit to Moscow but he hurried back at the end of the month to St. Petersburg to receive news of the war.  Before news had come of the peace of Villafranca he was constantly in dread that Prussia would go to war on behalf of Austria: 

“We have prepared too soon and too thoroughly, the weight of the burden we have taken on ourselves is drawing us down the incline.  We shall not be even an Austrian reserve; we shall simply sacrifice ourselves for Austria and take away the war from her.”

How disturbed he was, we can see by the tone of religious resignation which he assumes—­no doubt a sign that he fears his advice has not yet been acted upon.

“As God will.  Everything here is only a question of time; peoples and men, wisdom and folly, war and peace, they come and go like rain and water, and the sea alone remains.  There is nothing on earth but hypocrisy and deceit.”

The language of this and other letters was partly due to the state of his health; the continual anxiety and work of his life at Frankfort, joined to irregular hours and careless habits, had told upon his constitution.  He fell seriously ill in St. Petersburg with a gastric and rheumatic affection; an injury to the leg received while shooting in Sweden, became painful; the treatment adopted by the doctor, bleeding and iodine, seems to have made him worse.  At the beginning of July, 1860, he returned on leave to Berlin; there he was laid up for ten days; his wife was summoned and under her care he began to improve.  August he spent at Wiesbaden and Nauheim, taking the waters, the greater part of the autumn in Berlin; in October he had to go Warsaw officially to receive and accompany the Czar, who came to Breslau for an interview with the Prince Regent.  From Breslau he hurried back to Berlin, from Berlin down to Pomerania, where his wife was staying with her father; then the same week back to Berlin, and started for St. Petersburg.  The result of these long journeys when his health was not completely reestablished was very serious.  He