Behind everything there is movement, vibration. What causes a certain movement of particles of matter is vibration. Vibration is felt by us, it is realized by our senses as a certain movement of particles of matter, but vibration in itself is a movement. It is because of this that the power of the word is stronger than any medicine or any other treatment or operation, because the word causes certain vibrations in our body, in the atmosphere, in our environment, bringing about thereby a cure which nothing else can bring about.