Worlds in Collision by Immanuel Velikovsky

:”I came upon the idea that traditions and legends and memories of generic origin can be treated in the same way in which we treat in psychoanalysis the early memories of a single individual. I spent ten years on this work. I found that the collective memory of mankind spoke of a series of global catastrophes that occurred in historical times. I believed that I could even identify the exact times and the very agents of the great upheavals of the more recent past. The conclusions at which I arrived compelled me to cross the frontiers into various fields of science, archaeology, geology, and astronomy”.Immanuel Velikovsky, “Supplement: Worlds in Collision in the Light of Recent Finds in Archaeology, Geology, and Astronomy ” Earth in Upheaval, 1956