Student or Learner
This composition is a little tricky. Does "not to know" mean negative of negative - positive?
I learned "to" has a negative nuance in there.
ex)God is too wise not to know all about us.
=> God is so wise that he knows all about us.
To be "too something for something else" is a negative. If I'm too smart to waste my money gambling, it means I do not waste my money gambling.
So the "not" is added to negate the negative meaning.