" For the next half hour it continued. Dr. Joseph would call on someone who looked half bright, then he would call on someone whom he felt was just the opposite. In the upper grades—fourth, fifth, and sixth—he asked grammatical, mathematical, and geographical questions. And besides looking at hands, now he began inspecting teeth. Open wide, say “Ahhh”—and he would have the poor children spreading out their lips as far as they could while he peered into their mouths. At the university I had read about slave masters who had done the same when buying new slaves, and I had read of cattlemen doing it when purchasing horses and cattle. At least Dr. Joseph had graduated to the level where he let the children spread out their own lips, rather than using some kind of crude metal instrument. I appreciated his humanitarianism. "

― Ernest J. Gaines , A Lesson Before Dying