Apart from singing, even in speaking, among one hundred persons you will find one who speaks in his natural voice, and ninety-nine who imitate. They imitate someone else; they do not know it. The same thing that you find in grown-up people you will find in little children. The tendency in a little child is to change and to imitate. Every five or ten days, every month a child changes his way of speaking; his voice, his words, many things he changes. And where does he learn it? From the children in school. He sees a child walking in some way, or making gestures, or frowning, or he hears it speaking in a certain way. He does not realize it, but he has heard it and he does the same thing; so he goes on changing.