And know that this is the secret of the letters mentioned in the Kabbalistic writings in connection with the lights of the Ears, Nose and Mouth, for wherever there are letters, they indicate the presence of some aspect of the vessel. It is just that in the lights of the Ear, the roots of the vessel are barely discernible except in the form of one letter (a Heh). In the Nose they are a little more revealed (as the letter Vav of the Heh, consisting of six Alephs), and in the Mouth even more so (in the form of another four Alephs). Finally, in the action brought about in the lights of the mouth (their emergence and return) the vessel is revealed completely.