One way is known to many of us, though to woman perhaps more than to man, and that is impression. Very often we come into a house or we meet a person, and before we have spoken to that person we get a kind of impression, either pleasant or unpleasant, a certain knowledge of that person's being. Sometimes at the sight of a person we feel like saying, "Keep away"; sometimes at the first glance we feel drawn to a person without knowing the reason. The mind does not know, but the soul does. It is not only that one gets an impression of a person one meets, but if one is sensitive to impressions one can also feel the impression of a letter that comes to one from a stranger. Many say that they can tell someone's character by physiognomy or phrenology, but if they have not the sense of impression in their heart, even if they were to read a thousand books on physiognomy or phrenology they would never get the true impression. What does this show? It shows that true knowledge, from beginning to end, does not belong to the material realm.