The real truth is that, not only has man failed to overcome Nature in any sphere whatsoever but that at best he has merely succeeded in getting hold of and lifting a tiny corner of the enormous veil which she has spread over her eternal mysteries and secret. He never creates anything. All he can do is to discover something. He does not master Nature but has only come to be the master of those living beings who have not gained the knowledge he has arrived at by penetrating into some of Nature's laws and mysteries. Apart from all this, an idea can never subject to its own sway those conditions which are necessary for the existence and development of mankind; for the idea itself has come only from man. Without man there would be no human idea in this world. The idea as such is therefore always dependent on the existence of man and