In early 1901, the German Emperor Wilhelm II read "The Foundations" and was immensely impressed with the book. The Imperial Grand Chamberlain at the court, Ulrich von Bülow, the brother of the Chancellor Prince Bernhard von Bülow, wrote in a letter to a friend in January 1901 that the Kaiser was "studying the book a second time page by page". In November 1901, Chamberlain's friend, the German diplomat and courtier Prince Philip von Eulenburg, who happened to be the best friend of Wilhelm II, introduced Chamberlain to the Kaiser. Chamberlain and Wilhelm first met at Eulenburg's estate at Liebenberg and soon became very good friends, maintaining a regular correspondence which continued until Chamberlain's death in 1927.