You may command Nature to the extent only in which you are willing to obey her.

"I therefore say to you that tiredness and fatigue are effects caused by ignorance of Nature and disobedience to her inexorable law. You may command Nature to the extent only in which you are willing to obey her. You cannot intelligently obey that which you do not comprehend. Therefore I also say, ask of Nature that you may be one with her and she will whisper her secrets to you to the extent in which you are prepared to listen. Seek to be alone much to commune with Nature and be thus inspired by her mighty whisperings within your consciousness.