What philosophy do these song lyrics best describe?

[b][quote]What if there’s nothing more to us, we’re just carbon based. We’re just pixie dust.

What if life’s just a magic trick, some quick sleight of hand, meaningless to think…

What if consciousness can’t expand, and we fool ourselves with absurd demands..

What if there is no point at all….we just grow up to fade away…..[/quote][/b]