4645. From this it may be evident, that the affection of truth and the will of good, is heaven with man. When this is delightful and pleasant to man, then angels inflow and communicate to them [i. e., men] the sphere of their pleasantness and delight, and so produce [it in him]. It is the communication of spheres which causes it; and one sphere has communication with another, according to similitude. Similar is the case with the evil; if evil spirits speak of things agreeable to the man, then [men] have pleasantness and tranquillity; but, if otherwise, they have disquiet and unpleasantness.