All you see is laughter, but underneath it, I’m going crazy.
https://m.blog.naver.com/PostView.nhn?blogId=suhoi6&logNo=220923161267&proxyReferer=https%3A%2F%2Fwww.google.com%2F
I like this quote because it is made by my favourite actor, Yoo Haejin. He is known for his comedy acting, but he said that his good acting came from a lot of research and effort. This quote makes a lot of sense to me, too.