This documentary explains the power of brainwaves and how the effect of the words we use to communicate can change the properties of physical objects. There are varies studies that have been done to prove this.
You can take the same cook rice put it in two separate sealed containers. Say bad words to one and good words to the other. The effect will be the rice you spoke bad words to will rotten, And the rice you spoke positive inspiring words will continue to live and stay white as the first time it was placed in the jar. Some have kept their rice for months.