Seth: Why do people cry?
Maggie: What do you mean?
Seth: I mean... what happens physically?
Maggie: Well... umm... tear ducts operate on a normal basis to lubricate and protect the eye and when you have an emotion they overreact and create tears.
Seth: Why? Why do they overreact?
Maggie: [pause] I don't know.
Seth: Maybe... maybe emotion becomes so intense your body just can't contain it. Your mind and your feelings become too powerful... and your body weeps.
--City of Angels

"The best things in life are unseen. That's why we close our eyes to kiss, cry, pray, and dream."