Why is Gottfried Wilhelm Leibniz famous?

Gottfried Wilhelm Leibniz is celebrated as one of the most significant figures in Western intellectual history, often regarded as the last true polymath. His fame stems from several foundational contributions across multiple disciplines:12

• Mathematics: He is recognized as a coinventor of calculus, independently developing differential and integral calculus. His notation and algorithmic approach became the standard for continental mathematics. Additionally, he was a strong advocate for the binary system, which is fundamental to modern computing.13452
• Philosophy: As one of the three great early modern rationalists—alongside René Descartes and Baruch Spinoza—he developed influential metaphysical systems, including the theory of monads and the principle of sufficient reason.617
• Theodicy: He is well known for his argument that our world is the "best of all possible worlds," a concept he explored in his work Théodicée.12
• Innovation: Beyond theory, he designed the Step Reckoner, a mechanical calculating machine, and made notable contributions to fields such as geology and topology.52