Words have power. Words are a form of energetic vibration which modulate other energetic vibrations. This is what makes mantra so powerful. The repetition of a vibration changes the vibration of the one repeating it.
Many people are now familiar with Masuro Emoto, the Japanese scientist who studied the powerful vibrational relationship between words and water. He photographed water in crystalline forms after it had been in the company of a word for an extended period. The vibration of the word, even without being spoken, was powerful enough to leave a mark on the crystal. His experiments explored a variety of words, higher vibrating ones such as love and caring as well as lower vibrating ones such as hate, and stupid. The higher vibrating words made more beautiful and elaborate crystals, while the crystals of the lower vibrating words were almost always fragmented and incomplete.
In one of his books he discussed an experiment completed by school children in Japan. In the experiment, the children put into three jars a generous amount of cooked rice. The jars were sealed and left by the door to the home. Each day, as the children would enter and depart from the home they would greet one jar with kind and caring words, another with cruel and hurtful words, and the third with no words at all. Because the rice had been cooked it began a fermenting process in the jars. The jars that were spoken to kindly took the longest to ferment and grow mold. One would expect that the jars which were spoken to with hurtful words would ferment the quickest, however, that is not true. The rice which got no attention at all fermented rapidly, while the rice that was spoken to with cruelty took a week or so longer to rot. Words have power.
It is valuable to acknowledge from this experiment that when no energy is given to a thing, whether high in vibration or not, that thing loses vibration rapidly. It is also valuable to recognize that words of lower vibration will increase the rate of decay of an energy that is already compromised.
The mind is fallible, humans are fallible. Take for example the availability heuristic which is a judgment bias. Quite simply it is a mental shortcut that the mind takes to resolve a problem based on the information that is most available to answer that problem. For instance, recall your assumption that the rice spoken to cruelly would be the quickest to ferment in the argument presented above. Based on the information that was presented to you before the results of the experiment it was an easy leap to decide that the vibration of cruelty would be more harmful than the vibration of indifference. However, your assumption was not evidence that cruelty was more harmful than indifference. Rather, it was just your mind using the information most readily available to it to quickly leap to a judgement. To avoid the failings of the availability heuristic we must ask ourselves how reliable is the information we are working with?
Words not only enhance and deplete energetic vibrations, they also create illusions and delusions. The availability heuristic is a form of delusion. It is the formulation of a belief based on incomplete or false information. In the Yoga Sutras of Patanjali these kinds on mental delusions are addressed:
Yoga Sutra 1:9
ŚABDAJNĀNĀNUPĀTĪ VASTU ŚŪNYO VIKALPAH.
An image that arises on hearing mere words without any reality [as its basis] is verbal delusion.
Verbal delusions and judgment biases are valuable for contemplation because, while the creation of the belief or understanding of the situation is merely a delusion it will leave an impression on the mind, much like the water crystals of Masuro Emoto. The practice of yoga is about so much more that moving the body into strange and interesting shapes. Beyond the impressions of comfort and discomfort, like and dislike, is the opportunity to explore the ruts carved out by the delusions and misconceptions of the human experience. Getting to know the trappings of the mind and the minds ability to liberate itself from those trappings is the great gift of yoga. To know the power of the vibration of the words that move through you and to use those words mindfully, like planting seeds, pulling weeds, and watering a garden.