馬ば鹿かと天てん才さいは紙かみ一ひと重え

expression

there is a fine line between genius and insanity

Proverb meaning that extraordinary intelligence and foolishness are surprisingly close; often used to comment on eccentric or unconventional behavior.

• 彼かれの奇き抜ばつなアイデアを見みると、馬ば鹿かと天てん才さいは紙かみ一ひと重えだと思おもう。

  Looking at his outlandish ideas, I think there's a fine line between genius and insanity.