One of the Stage Manager's speeches in Act III is "Now there are some things we all know, but we don't take'm out and look at'm very often. We all know that something is eternal. And it ain't houses and it ain't names, and it ain't earth, and it ain't even the stars . . . everybody knows in their bones that something is eternal, and that something has to do with human beings. All the greatest people ever lived have been telling us that for five thousand years and yet you'd be surprised how people are always losing hold of it. There's something way down deep that's eternal about every human being." Is this true?

please answer the prompt with 350+ words, thank you! :)