Light symbols are the basis of the same alphabet, as well as geometry is a geometry of light: the geometric point is a star-light point and the straight line is a light ray. Rightness and righteousness and all related concepts have this symbolic origin. The first words are ideograms, icons, images, and the word itself is conceived on the model of manifestation of light, it's isomorphic to light as a theophany. Light is not only the central archetype of the diurnal regime of imagination, but also, through contrast, of the nocturnal regime of imagination. Every literary text is pervaded by the semantic field of light and of all that is related to it. Every scientific theory is a theory of light or presupposes one. Semiotics and rhetoric of light are operating and are the means to operate within every literary text and every scientific practice. This book focuses on the analysis of the entanglement between science and literature within literary texts and scientific theories through the perspective of light as archetype and absolute metaphor.