"What we generally know as the breath is that little inhaling and exhaling which we feel through the nostrils. We think that is breath and attach little importance to it, while in reality, breath is a life-current running through the innermost part of being towards the surface. It would be no exaggeration, according to the mystical point of view, to say that the breath connects heaven and earth. ...
For the mystic, breath is not only a science, but the knowledge of breath is mysticism, and mysticism to the thinker is both science and religion. The mystery of breath is not a thing that can be comprehended by the brain only. The principles of mysticism rise from the heart. They are learned by intuition and proved by reason. ... "