אִם רָאִיתָ תַּלְמִיד שֶׁלִּמּוּדוֹ קָשֶׁה עָלָיו כְּבַרְזֶל- בִּשְׁבִיל רַבּוֹ שֶׁאֵינוֹ מַסְבִּיר לוֹ פָּנִים

ביטוי (אנגלית)

If you see a student whose learning is as hard as iron for him—it is because his teacher does not show him a friendly face

הגדרה (אנגלית)

If a student struggles to understand the material, the reason may be the teacher’s lack of affection towards him. An educational principle stating that sometimes a student’s difficulty in learning is due only to the teacher’s rigid attitude and lack of belief in the student’s abilities.

(“Rava said: If you see a student whose learning is as hard as iron for him—it is because his teacher does not show him a friendly face” - Taanit 8a)