This text examines the classification of philosophical disciplines, drawing on Immanuel Kant’s classic division based on four fundamental questions: What can I know? What should I do? What may I hope? and What is man? The author maps these questions onto corresponding subfields such as gnoseology, ethics, the philosophy of religion, and philosophical anthropology. However, the article emphasizes that no division of philosophy into subdisciplines is definitive or "natural." The central argument is that every philosophical discipline must inherently contain the entirety of philosophical inquiry in its background. No field can exist in isolation; for instance, a discourse on humanity cannot dispense with a reflection on the world, and vice versa. The text thus highlights the inner interconnectedness and indivisibility of philosophy, asserting that even a specialized subdiscipline must remain "the whole of philosophy" to be legitimate. This perspective challenges rigid boundaries between different spheres of philosophical investigation and underscores their mutual contingency.