2. The best physician is doctor diet, doctor quiet, And Doctor Merryman. There are three best doctors: dieting doctors, Rest doctor and happy doctor.

3.Misfortune is a good teacher.

4. Observation is the best teacher.

5.Like teacher, Like pupil. What kind of teacher teaches what kind of students.

6. The gentleman is speedy as a worker and cautious as a speaker. A gentleman is quick at doing things but slow at speaking.