this is by leonardo da vinci

“일을 즐겁게 하는 자는 세상이 천국이요.

일을 의무로 생각하는  자는 세상이 지옥이다.”

i read it in a korean book so it’s obviously in korean but to roughly translate it for all of you english speakers/readers,

“those who work out of pure joy, the world is heaven.

those who work out of obligation, the world is hell.”