"Wissenschaft der Logik — Band 1" by Georg Wilhelm Friedrich Hegel is a philosophical work published between 1812 and 1816. Building upon his earlier phenomenology, Hegel develops an ontological-metaphysical logic that unites ancient philosophy with modern thought. Through dialectical reasoning, he systematically derives logical categories that possess both subjective and objective reality, presenting them as "the inner nature of the world." The work examines fundamental concepts like being, nothing, becoming, quality, and quantity, demonstrating how each notion necessarily transforms into others through inherent contradictions and unity.