They have only two possible messages. The first is an automatic response to the second, and the second is an automatic response to the first.
The first is, ”Here I am, here I am, here I am.”
The second is, ”So glad you are, so glad you are, so glad you are

“My wife has been killed by a machine which should never have come into the hand…”

“Do you realize that all great literature — "Moby Dick," "Huckleberry Finn," "A …”

“I do not say that children at war do not die like men, if they have to die. To …”

“Everything was beautiful and nothing hurt.”