He meant that when people laugh together, they cease to be young and old, master and pupils, jailer and prisoners. They become a single group of human beings enjoying its existence.
Gilbert HighetThe teacher's chief difficulty is poverty. He (or she) belongs to a badly paid profession. He cannot dress and live like a workman, but he is sometimes paid as little as an unskilled laborer.
Gilbert HighetMany of the snarly bad-tempered teachers whom we remember with hatred were really nice people soured by years of anxiety and penny-pinching.
Gilbert Highet