Another person using the same words would've meant them ironically.

And how much does this person mean to us living here today, in 2009?

"That person meant something to me and maybe I could mean something to someone else."

In this context person means a legal entity, not necessarily an individual.

In video games, first person means the player sees the game from the eyes of the character he or she is playing as.

I'm serious when the only thing a person means to me is his move right or move left.

He also thinks much about what a person could mean when he or she is saying something.

Just because he seems like a nice person doesn't mean he's not our murderer.

What the old person really means is: "It can't be true that life went by so fast.

Every person waiting for an organ transplant means the world to so many people.