He disavowed non-determinism. He claimed quantum theory is incomplete. Yet, amazingly, Einstein unified space and time, matter and energy, etc. Classical science had a brain-lock on his mind. He believed and had absolute faith that the universe HAD to be deterministic.
Paradoxes value the precondition of classical science.
Because classical science values the precondition of unclassified Quality subordinated to subject and object. Note that both NP and GR are classical science, or at best, steeped in the baggage of classical science. Einstein developed the special and general theories using his own innovative extensions of classical science's fundamentals. Both are about the macroworld. Actually GR is about the super-macroworld of cosmology.