This essay, published here for the first time, is one of the most important works from Schelling‹s literary estate in Berlin. On 57 handwritten pages, it contains a cohesive interpretation of selected passages from Plato‹s ‹Timaeus‹ and relevant passages from ‹Philebus‹ (Bipontine edition of Plato). For the first time, this essay provides more precise insight into the origins of Schelling‹s interest in natural philosophy and questions pertaining to it, which began earlier than was believed up to now. In his contribution ‹Genesis und Materie‹ (Genesis and Matter), Hermann Krings deals with the significance of the ‹Timaeus‹-transcript for Schelling‹s natural philosophy.