Deja vu (n.) is no mere illusion, it is the memory of an unconscious fantasy.
Deja vu (n.) is not merely an illusion. On the contrary, something is really touched that we have already experienced, only we cannot consciously recall the latter because it never was conscious.
Deja vu (n.) points, in a dream, to the one place of which anyone can say with conviction 'I have been here before': the mother's genitals.
Deja vu (n.) is no illusion: something is really touched on that we have experienced before — an unconscious fantasy, which we cannot remember because it was never conscious.
Deja vu (n.) came to the girl who 'knew' her friends' house at first sight because she had lived it before — a home with an only brother about to die; she had once half-wished her own dead, and would have worn mourning.
Deja vu (n.) appears in analysis as the patient's certainty that he has already told you something — he meant to, and takes the intention for the deed.
Deja vu (n.) is a forbidden resemblance displaced onto the place: the feeling 'I've been here before' stands in for a likeness that cannot become conscious.