From Schiller's letters on aesthetics

"The misfortune of his brothers, of the whole species, appeals loudly to the heart of the man of feeling; their abasement appeals still louder: enthusiasm is inflamed, and in souls endowed with energy the burning desire aspires impatiently to action and facts. But has this innovator examined himself to see if these disorders of the moral world wound his reason, or if they do not rather wound his self-love? If he does not determine this point at once, he will find it from the impulsiveness with which he pursues a prompt and definite end. A pure, moral motive has for its end the absolute; time does not exist for it, and the future becomes the present to it directly; by a necessary development, it has to issue from the present. To a reason having no limits the direction towards an end becomes confounded with the accomplishment of this end, and to enter on a course is to have finished it."

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."