my math teacher: *pulls out dollar bill* how much is this worth?

Students: $1

teacher: *folds bill in half* how much is this worth now?

students: $1

teacher: *folds bill in half again* how much is it worth now?

students: $1

teacher: what about if I crumple it up and throw it on the ground? Will someone pass by it and say, "Ooh, a dollar, but I won't pick it up because it's all crumpled and dirty"?

students: No, because it's still worth a dollar.

teacher: Exactly. No matter how much a human goes through or how much they do, they're still worth the life of a human.