Immanuel Kant
Immanuel Kant (; ; 22 April 1724 – 12 February 1804) was a German philosopher who is a central figure in modern philosophy. In his doctrine of transcendental idealism, he argued that space, time and causation are mere sensibilities; "things-in-themselves" exist, but their nature is unknowable. In his view, the mind shapes and structures experience, with all human experience sharing certain structural features. He drew a parallel to the Copernican revolution in his proposition that worldly objects can be intuited "a priori" ("beforehand"), and that intuition is therefore independent from objective reality. Kant believed that reason is the source of morality, and that aesthetics arise from a faculty of disinterested judgment. Kant's views continue to have a major influence on contemporary philosophy, especially the fields of epistemology, ethics, political theory, and post-modern aesthetics.
Goethean science
Immanuel Kant in Prussia undertook a major rescue operation to preserve the validity of knowledge derived via reason (science), as well as of knowledge going beyond the rational mind, that is of human liberty and of life beyond simply an expression of 'the chance whirlings of unproductive particles' (Coleridge). Kant's writings had an immediate and major impact on Western philosophy and triggered a philosophical movement known as German idealism (Fichte, Hegel, Schelling), which sought to overcome and transcend the chasm Kant had formalized between the sense-based and the super-sensible worlds, in his attempt to 'save the appearances' (Owen Barfield), that is, to preserve the validity of scientific or rational knowledge as well as that of faith.