Source
To Philipp zu Eulenburg
Berlin, March 12, 1881
[…]
The Chancellor [Bismarck] is a despot; but he has the right to be one, indeed, he must be one. If he were not a despot, if he were an ideal parliamentarian who allowed his course to be determined by the dumbest thing there is, by parliamentary majorities, then we wouldn’t even have a chancellor yet, and least of all a German Reich. On the other hand, it is certainly true that only dependent characters or figures of the second and third rank can serve under such a despot, and that any free man would be well advised to resign in good time. In doing so, the free man does what is right for him; but the Chancellor also does what is right for him in not allowing himself to be swayed in his actions or inaction.
[…]
Source: Theodor Fontane to Philipp zu Eulenburg, March 12, 1881; original German text reprinted in Theodor Fontane, Werke, Schriften und Briefe, edited by Walter Keitel and Helmuth Nürnberger, twenty-one volumes in four sections, section IV, Briefe, vol. 3, 1879–1889. Munich: Carl Hanser Verlag, 1980, p. 125.