実るほど頭の下がる稲穂かな
Meanings
1
the more learned, the more humble; the boughs bearing the most hang lowest
Proverb comparing a rice ear that bends as it ripens to a wise person who becomes humbler with knowledge. Often used to praise modesty in accomplished people.
See also: 実るほど頭を垂れる稲穂かな
He is a famous scholar, yet he is always humble. Truly, the more learned, the more humble.