Mind means words; self means silence. Mind is nothing but all the words that you have accumulated; silence is that which has always been with you, it is not an accumulation. That is the meaning of self. It is your intrinsic quality. On the background of silence you go on accumulating words, and the words in total are known as the mind. Silence is meditation. It is a question of changing the gestalt, shifting the attention from words into silence — which is always there.