The Contra Levitatem maxim of the Florentine Academicians. Ruskin's warning against science as an interpreter of its own observations. How man's inner nature and the outer universe interpret one another. The Solfatara phenomenon. The super-physical character of Levity. X. THE FOURTH STATE OF MATTER The need of raising scientific inquiry to nature's upper border. The laws of Conservation, their origin and their validity. Joule and Mayer. Extension of the field-concept from the central to the peripheral field-type. Natural phenomena brought about by the suctional effect of the earth's levity-field. The different conditions of matter seen in the light of the levity-gravity polarity. Heat, the fourth state of matter. Procreation of physical substance - a natural fact. The case of Tillandsia. The problem of the trace-elements. Homeopathy, an example of the effect of dematerialized matter. The meteorological circuit of water. The nature of lightning. XI. MATTER AS PART OF NATURE'S ALPHABET The origin of the scientific conception of the chemical element. Study of some prototypes of physical substances in the light of the levity-gravity polarity. The functional concept of matter. The complete order of polarities - cold-warm, dry-moist - in the doctrine of the four elements. The position of sulphur and phosphorus in this respect. Vulcanism and snow-formation as manifestations of functional sulphur and phosphorus respectively. The process of crystallization. Carbon as a mediator between sulphur and phosphorus. The alchemical triad. XII. SPACE AND COUNTER-SPACE Geometrical considerations required by the recognition of levity. The value in this respect of projective geometrical thinking. Geometrical polarities of the first and second order. XIII. 'RADIANT MATTER' Electricity and magnetism as manifestations of interacting levity and gravity. Electricity - a product of disintegrating matter. Modern physics, no longer a 'natural' science. Eddington's question,' Manufacture or Discovery?' Man's enhanced responsibility in the age of physical science. XIV. COLOURS AS 'DEEDS AND SUFFERINGS OF LIGHT' Goethe's Farbenlehre - the foundation of an optical science based on the colour-seeing faculty of the eye. The modern physicist's view of the Newtonian interpretation of the spectrum. A short history of Goethe's search for a satisfactory conception of Light and Colour. His discovery of Newton's cardinal error. First results of his own studies. The 'negative' spectrum. XV. SEEING AS 'DEED' - I Goethe's way of studying the totality of the act of seeing. The 'inner light'. XVI. SEEING AS 'DEED' - II Extension of Goethe's inquiry to a pursuit of the act of seeing beyond the boundaries of the body. XVII. OPTICS OF THE DOER Purging optics from its onlooker-concepts. The role of foregone conclusions in the physical conception of light. The true aspect of the so-called velocity of light. XVIII. THE SPECTRUM AS A SCRIPT OF THE SPIRIT