“Spirit is the ultimate being, the indestructible being that lives eternally.. The soul is one of the subtle bodies that will eventually disintegrate. Is that clear, do you understand that? I think what you want to know is how the two manifest with man so that he may know which is which. Is that what you mean? To have the spirit consciously manifest is, of course, not easy. This can only happen when spiritual development has reached a certain point, when a breakthrough has been accomplished in man’s higher self. Then, and only then, you will feel that something thinks within you, directs you, sends you messages, gives you deep and unquestionable knowledge. And all this does not come from your brain region where your normal thinking takes place, but it comes from the region of your solar plexus. The manifestation of your soul, however, you can determine by your emotional life, by your feelings, and by your subconscious. Even for this, a great deal of self-knowledge is necessary because most people are unaware of the majority of their real feelings and emotional reactions and are thus slave to them. They are mastered by them instead of controlling and mastering them. In order to achieve the latter, self-observation, objectivity, and self-criticism are essential.. The result must be, first, awareness of the soul, then, awareness of the spirit.” (PL #21)