Immanuel Kant
Kant published other important works on ethics, religion, law, aesthetics, astronomy, and history. These include the "Universal Natural History" (1755), the "Critique of Practical Reason" (1788), the "Metaphysics of Morals" (1797), and the "Critique of Judgment" (1790), which looks at aesthetics and teleology.
Johann Gottlieb Fichte
Reviews were assuming Kant was the author when Kant cleared the confusion and openly praised the work and author. Fichte's reputation skyrocketed as many intellectuals of the day were of the opinion that it was "the most shocking and astonishing news... [since] nobody but Kant could have written this book. This amazing news of a third sun in the philosophical heavens has set me into such confusion". Karl Popper considers the book as essentially "a fraud" which though rather boring cleverly imitated Kant's style and that the rumours that Kant himself had written the book to be contrived. Kant waited seven years to make public statement about the incident; after considerable external pressure he dissociated himself from Fichte. In his statement, he inscribed, "May God protect us from our friends. From our enemies, we can try to protect ourselves."