A Problem (n.) is if persistently insoluble, likely being asked in the wrong way.
A Problem (n.) is solved in the problem, not away from it — not in a hoped-for future but in the present, seen whole.
Problem (n.) of a serious kind is never fully solved; its meaning lies in our working at it endlessly, which alone saves us from petrifaction.
Problem (n.) one brings to a master is the question itself — the belief that it makes sense; anyone who goes to a psychiatrist ought to have his head examined.
Problem (n.) that stays insoluble should always be suspected of being a question asked the wrong way: split one process in two, forget you did it, then puzzle for centuries how they meet.