If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.
Niels BohrAnd anyone who thinks they can talk about quantum theory without feeling dizzy hasn't yet understood the first thing about it.
Niels BohrAn independant reality in the ordinary physical sense can neither be ascribed to the phenomenon nor to the agencies of observation.
Niels Bohr