An old professor who was never on time died, and was called the late professor Jones. College bred is a four-year loaf made out of the old man's dough. After getting his master's degree, Bob got a job as a postman, reconciling that he was still a man of letters. Circular arguments often make the rounds. If you do research in optics, you will have to do some light reading.
Old math profs never die, they just use strange expressions.
Some mathematicians are on the negative side while others are quite positive. A professor without a pointer may find that his lecture is pointless. A math professor in an unheated room is cold and calculating. Young women who are mathematics professors closely watch their figures. A dog attending university would want a pe-digree.