How did studying physics, chemistry, and medicine in Leipzig change Friedrich Wilhelm Joseph von Schelling’s ideas?

Friedrich Wilhelm Joseph von Schelling’s time in Leipzig (1795–1797) served as a decisive turning point in his philosophical development. While attending lectures in physics, chemistry, and medicine, he began to move away from the idealism of his former mentor, Johann Fichte.1

Schelling concluded that Fichte’s system failed to adequately account for nature, as it viewed the natural world merely as an object subordinate to humanity. In contrast, Schelling’s exposure to the natural sciences led him to develop a philosophy of nature. Through this new framework, he sought to demonstrate that nature, when viewed in itself, exhibits an active, inherent development toward the spirit. This shift marked his first independent philosophical achievement and earned him significant recognition among the Romanticists.1