That shows what power the word has. If we control our speech, if we know how to use a word, we know the chemical science of life and use it to the best purpose in life. Sometimes a person can change a situation by one word and others cannot change it by a hundred hammers. There is a way to hammer and break a rock and there is the way of the water. If the rock is in the way, the water will not hammer; the water will surround it, will run smoothly over it and make its way on the top of the rock and in this way the waves will proceed.