The Worlds first book on Bio-Cybernetics. The link of organ equipment, inner world, and environment of the animal which are subordinated to the animal's building plan are studied in this work "Environment and Inner World of Animals" (1904). Biography : Jakob von Uexküll, an eccentric philosopher and biologist sprung from Baltic aristocracy, is without a doubt one of the most prolific intellectuals of the twentieth century. Uexküll was born in Keblas (now Mihkli), Estonia, on September 8, 1864.