"These much admired mechanisms, like the automatons of Albertus Magnus, Bacon, and Regiomantus, were ingenious toys; nothing more serious. They evoked not only wonder, but also fear. The robot of Albertus Magnus, which could open the door and greet the visitor (the fruit of decades of effort), was smashed by the startled Thomas Aquinas with a blow of his stick. The intellectual fascination which machines have held for man from the earliest times is coupled with a presentiment of the uncanny, an almost unaccountable feeling of horror."