If Nikola Tesla was only a great scientist, it is unlikely that this would have generated such a burning interest in everything that he wrote. His articles and letters are published and sold in great demand not only by those interested in the history of science and technology. Of course, a talented scientist always makes discoveries not so much with reason as with intuitive insight - incomprehensible and bordering on the gift of a prophet. The skeptic will say that this is an exaggeration; but not every scientist is said to have found the key to the powerful elements of nature, mysterious and formidable; that someone may already own this key...