Behind the word is the much greater power, the breath. If a person wishes to study the self, to know the self, what is important is not the study of the mind, of the thought, the imagination, nor of the body, but the study of the breath. The breath has made the mind and the body for its expression. It has made all from the vibration to the physical atom, from the finest to the grossest. The breath, the change of the breath can make us sad in the midst of happiness, it can make us joyful in the saddest, the most miserable surroundings. That is why, without reason, in some places we feel glad, in other places a melancholy comes over us. It is the air that makes us so. You may say, "How can the breath make all this? How could it make the body?" I have seen people become in the course of years as their breath is. What exists in the breath is expressed in the form. As the breath is, so the child becomes.