Flying Saucers by Carl Jung

Since the things reported of Ufos not only sound incredible but seem to fly in the face of all our basic assumptions about the physical world, it is very natural that one's first reaction should be the negative one of outright rejection. Surely, we say, it's nothing but illusions, fantasies, and lies. People who report such stuff – chiefly airline pilots and ground staff – cannot be quite right in the head! What is worse, most of these stories come from America, the land of superlatives and of science fiction.

In order to meet this natural reaction, we shall begin by considering the Ufo reports simply as rumours, i.e., as psychic products, and shall draw from this all the conclusions that are warranted by an analytical method of procedure.