It is the vibration caused by the breath which becomes thought waves which carry the thought from one mind to the other. It is therefore that thought-reading much depends upon the position in which two people sit with regard to each other, for a certain position makes it easier for the breath to reach than another, although it is not always necessary that a person must be facing one in order to receive thought waves through breath. If the thought power is strong and the breath is sound enough to carry the thought waves, a person, whether facing or having his back turned, must receive thought.