영어 문장 네 개 해석 부탁드려요

아래 문장들의 정확한 해석이 궁금해요.
1. I want to be a nobody; I want to be true to myself.
2. Accompanying your child costs nothing, yet it is the most priceless thing in the world.
3. As is known to everyone, he is late again.
4. It is not the person involved but the place where the treasure was found that upset me most.
애매하게 느껴지는 부분이 있어서 도움 부탁드려요.