Audio File   In deciphering spectral phenomena, it should be remembered that space is not empty; that light, in traversing space, is sometimes slightly modified by the various forms of energy and matter which circulate [More]
Audio File   Man is a creature of the soil, a child of nature; no matter how earnestly he may try to escape from the land, in the last reckoning he is certain to fail. [More]
Audio File        Light, heat, electricity, magnetism, chemism, energy, and matter are — in origin, nature, and destiny — one and the same thing, together with other material realities as yet undiscovered on our [More]