弘こう法ぼうも筆ふでの誤あやまり

expression

even experts make mistakes; Homer sometimes nods

Proverb meaning that even a master can err. Literally refers to the great calligrapher Kōbō Daishi (Kūkai) making a brush mistake.

• 弘こう法ぼうも筆ふでの誤あやまりで、彼かれほどのベテランでもたまにはミスをする。

  Even Homer sometimes nods; even a veteran like him makes a mistake now and then.