Since spiritual guidance is not necessarily a study, the teaching which reaches from a teacher to a pupil does so in the form of reflection. This teaching is called in Sufi terms Tawajjeh. Of course, one learns from books; but what one learns from a spirit, from a soul, is learnt from a living source. For instance, the same thing read in a book does not reach so deep as when it is spoken. And when it is spoken by the teacher it goes still further. Hearing from a teacher is a direct reflection. It is not only the word that a teacher speaks, but even the silence, which is a still greater reflection. Sometimes words written on paper by the teacher also make a reflection if they have come from the depth; but if the same words are spoken by the same teacher, that reflection is greater still. When Tagore recited his poetry himself it was twenty times more effective.