Every activity of the outer world is a kind of reaction; in other words, a shadow of the activity which is behind it and which we do not see. Also there is a difference in time. An activity which has taken place twelve hours earlier is now visible in color on the outer plane, and it is the same with the effect of dreams on life. Of something that one has perhaps seen in a dream at night, one will see the effect in the morning, or a week later. This shows that there is some activity which takes place behind the scenes and is reflected on the outer life, according to how the activities of the outer life are directed.