The professor's focus is on understanding, gaining insight into, judging the significance of, and organizing old knowledge. He is disturbed by the pile-up of undigested and ill-understood new results. He is not happy until he has been able to fit these results into a larger context. He is happy if he can find a new conceptual framework with which to unify and simplify the results that have been found by the researcher. Before going into print, he lets his ideas ripen. Priority is not an issue for him.
From The role of the professor by Walter Noll (1925 - 2017), former Professor of Mathematics at Carnegie Mellon University.