◆弟子は師匠の半減 Deshi wa shishou no hangen.
- 解釈：弟子の学力が先生の学力を超えることは難しいということ。
- Literal：A pupil is a teacher's reduction by half.
- Interpretation：It means that it is difficult that a pupil's academic ability exceeds a teacher's academic ability.
- 類義：弟子賢しとも、師の半学に如（し）かず。弟子はその師に勝らず。
- 反義：青は藍より出でて藍よりも青し。