No doubt there are things which pass the ordinary comprehension: things one can not teach only by speaking or acting. Thus the way of teaching called Tawajjeh is without words; it is not external teaching, it is a teaching in silence. For instance, how can one explain the spirit of sincerity or the spirit of gratefulness; how can one explain the ultimate truth, the idea of God? Whenever attempted it has failed; it has made some confused and has made others give up their belief. It is not that the one who explains has not understood, but that words are inadequate to explain the idea of God.