For instance, if we study ourselves we shall find that the beats of the pulse and of the heart, the inhaling and exhaling of the breath, are all the work of rhythm. Life depends upon the rhythmic working of the whole mechanism of the body. Breath manifests as voice, as word, as sound. The sound is continually audible, the sound without and the sound within ourselves: that is music. This shows that there is music outside and music within ourselves.