From Schiller's letters on aesthetics

"It is only when a third character, as previously suggested, has preponderance that a revolution in a state according to moral principles can be free from injurious consequences; nor can anything else secure its endurance. In proposing or setting up a moral state, the moral law is relied upon as a real power, and free-will is drawn into the realm of causes, where all hangs together mutually with stringent necessity and rigidity.

[...] All improvement in the political sphere must proceed from the ennobling of the character. But, subject to the influence of a social constitution still barbarous, how can character become ennobled? It would then be necessary to seek for this end an instrument that the state does not furnish, and to open sources that would have preserved themselves pure in the midst of political corruption."