张伯苓先生任南开中学校长时,治校极严。学校的规定之一,是学生不准抽烟,违者记过。有一回,他训斥一个学生犯了抽烟禁令,那位学生调皮地说:“你叫我不抽烟,你干嘛也抽?”张先生一时语塞,憋了半天,说不出话来,随后他把烟一撅两断,坚定地说:“我不抽, Mr. Zhang Boling Ren Nankai Middle School principals, the school is extremely strict. One of the provisions of the school, students are not allowed to smoke, offenders recorded. On one occasion, he scolded a student for having committed a smoking ban. The student mischievously said: “You told me not to smoke, why are you pumping it?” Mr. Zhang paused for a long time and could not speak, then he The smoke of a broken off, firmly said: "I do not smoke,