There is no upper limit to what individuals are capable of doing with their minds. There is no age limit that bars them from beginning. There is no obstacle that cannot be overcome if they persist and believe.
But in physics I soon learned to scent out the paths that led to the depths, and to disregard everything else, all the many things that clutter up the mind, and divert it from the essential. The hitch in this was, of course, the fact that one had to cram all this stuff into one's mind for the examination, whether one liked it or not.
Original minds are not distinguished by being the first to see a new thing, but instead by seeing the old, familiar thing that is over-looked as something new.
Freedom can never be reached by the weak. Throw away all weakness. Tell your body that it is strong, tell your mind that it is strong, and have unbounded faith and hope in yourself.