brush, writing brush
筆記録は読んだが人生を正当化しようと同席は？
I read the notes, but were you there as well, trying to justify your life?
— オッペンハイマー (2023)
彼は筆で生計を立てている。
He earns a living with his brush.
筆を…
The brush…
— 燃ゆる女の肖像 (2019)
弘法筆を選ばず。
A true master doesn’t blame their tools.
弘法も筆の誤り。
Even the most skilled can make mistakes.