Invasion of the Body Snatchers.
"We can't close our eyes all night.
We may wake up changed into something evil and inhuman.
In my practice, I've seen how people have allowed their humanity to drain away.
Only, it happens slowly instead of all at once.
They didn't seem to mind. But just some people.
All of us... a little bit.
We harden our hearts and grow callous.
Only when we have to fight to stay human
do we realize how precious it is to us."