Nietzsche considered a free spirit to be the embodiment of a transvaluation of all values. Prior to Nietzsche's time, he claimed, the scientific method of searching for truth and knowledge was met with scorn and derision. A quiet, cautious, modest manner was seen with contempt. Our present modesty compels us to recognize man's derivation from animals, not divinities. Also, we know that man is not superior to other animals. By reducing man to a mere machine, devoid of free will, we have learned much about his physiology. Will is now known to be a necessary reaction to a stimulus. Consciousness and spirit derive from instinct.