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.
Gustav Hartenstein
He extended Herbart's thinking in the works entitled:
Also, he was the author of a 12–volume edition of Herbart's works, titled "Johann Friedrich Herbart's sämmtliche werke" (1850–52). In 1867 he published an edition of Immanuel Kant's collected works; "Immanuel Kant's sämmtliche Werke" (8 volumes).