338. [330] It is to be observed, that there may be anything either spiritual, moral or civil whose effect man has produced and thence has loved; the man (1) hears it from another, or he reads it in a book. (2) Thence it becomes his thought. (3) In the thought there is raised up a perception of it, because this was the first of that thing. (4) His affection is in the perception, thus the affection of truth. (5) This affection which is called the affection of truth is from the affection of good, which is of the will, thus from the will in the affection of truth there is effected the conjunction of good and truth, in which conjunction the will and the understanding or good and truth act as one. (6) Thus one is concealed in the other, within, and all are aroused from the ultimate, even through the hearing and sight, that is, the rousing up, namely because the will is concealed inmostly in the hearing, and thence in the thought, and it goes forth not otherwise than the spiritual sense and the celestial sense from the natural sense into the hearing, and thence sight is simultaneous. But it does not produce; production is effected by the will or the affection of good into the affection of truth, thence into the perception and from this into the thought; but not vice versa. From these things it is evident whence are appearances.