Human reason, in one sphere of its cognition, is called upon to consider questions, which it cannot decline, as they are presented by its own nature, but which it cannot answer, as they transcend every faculty of the mind.
For now we see that when we conceive ourselves as free we transfer ourselves into the world of understanding as members of it, and recognise the autonomy of the will with its consequence, morality; whereas, if we conceive ourselves as under obligation we consider ourselves as belonging to the world of sense, and at the same time to the world of understanding.
Habe den Mut, dich deines eigenen Verstandes zu bedienen.
