Abstract
This paper examines the philosophical foundations of Goethe’s morphological studies, in particular his concept of the ‘archetypal plant', which can be described as the dynamic principle of a living surface that governs plant formation through alternating processes of expansion and contraction. The Austrian philosopher Rudolf Steiner claimed that Goethe’s approach offers a scientifically grounded approach to understanding organic form and development through what may be termed empirically based, productive intellectual intuition, namely the mental reconstruction of an organism’s formative principle and laws. Here it is shown that Goethe’s rational organicism, as elaborated by Steiner, provides a conceptual and methodological framework that suggests a solution to the long-standing problem of understanding organismic properties like autopoiesis, autonomy and agency. Yet, Goethe struggled to identify a comparable principle for animals. Steiner argued that animal life is determined by a psychological principle—a non-physical centre of sensation and movement that structures the organism in relation to its environment—and that this, too, can be grasped in productive intuition. The paper reconstructs the animal archetype by delineating its essential features: the relations between its interior and exterior, realized in sensory, nutritive and motor functions. The study concludes that Goethe’s rational organicism can serve as a methodological complement to the organicism of the current philosophy of biology.