CHAPTER VI.
Fourteen days in Berlin (From September 14 to 28, 1828) .-- Return by Posen (Prince Radziwill) and Zullichau (anecdotes) to Warsaw .-- Chopin's doings there in the following winter and spring .-- his home-life, companions, and preparations for a journey to Vienna.
Chopin, leaving his apprenticeship behind him, was now entering on that period of his life which we may call his Wanderjahre (years of travel).
This change in his position and circumstances demands a simultaneous change in the manner of the biographical treatment.

Hitherto we have been much occupied with the agencies that made and moulded the man, henceforth we shall fix our main attention on his experiences, actions, and utterances.

The materials at our disposal become now more abundant and more trustworthy.

Foremost in importance among them, up to Chopin's arrival in Paris, are the letters he wrote at that time, the publication of which we owe to Karasowski.

As they are, however, valuable only as chronicles of the writer's doings and feelings, and not, like Mendelssohn's and Berlioz's, also as literary productions, I shall, whilst fully availing myself of the information they contain, confine my quotations from them to the characteristic passages.
Chopin's long-projected and much-desired visit to Berlin came about in this way.