We are entering a new great cycle of humanity, and everything old and outdated is shed like old, worn-out skin. Humanity has outgrown the old conditions, ideals, customs, laws, ethics, old sociological, theological, philosophical, economic and metaphysical concepts, and is ready to put an end to them. The enormous cauldron of human thought is boiling at full speed, and much is rising from the bottom to its surface. Raja yoga can be useful to people who strive to free themselves from the slavish subordination of their minds and who are trying to subordinate the mind to the control of the higher self through the will. The purpose of this book is to put you on the path to the development of consciousness, and not to introduce you to the details of the scientific side of the teachings of yoga. Raja Yoga teaches how to control the mind intelligently and productively, conserving all the wasted force, thereby increasing its strength and productivity. By learning the secrets of Raja Yoga, you will learn how to direct your strong, healthy minds in the right direction and how to dominate the material world by acting on energy and matter.