“I believe that it is wrong to designate the feeling of having experienced something before as an illusion.”

“To the category of the wonderful and uncanny we may also add that strange feeling we perceive in certain moments and situations when it seems as if we had already had exactly the same experience, or had previously found ourselves in the same situation. … I believe that it is wrong to designate the feeling of having experienced something before as an illusion. On the contrary, in such moments something is really touched that we have already experienced, only we cannot consciously recall the latter because it never was conscious. In short, the feeling of Déjà vu corresponds to the memory of an unconscious fantasy.”

― Sigmund Freud, The Psychopathology of Everyday Life