글은 기성명이면 족하다It's enough to know how to write your name.
This proverbs reminds the listener (of possibly a bygone era) that extensively studying reading and writing is not a necessity. It is is enough to know your name. (글이란 제 성과 이름이나 쓸 줄 알면 족하다는 뜻으로, 글공부를 많이 할 필요가 없다는 말)
