The only ghosts, I believe, who creep into this world, are dead
young mothers, returned to see how their children fare. There is
no other inducement great enough to bring the departed back.
They glide into the acquainted room when day and night, their
jailers, are in the grip, and whisper, "How is it with you, my
child?" but always, lest a strange face should frighten him, they
whisper it so low that he may not hear. They bend over him to
see that he sleeps peacefully, and replace his sweet arm beneath
the coverlet, and they open the drawers to count how many little
vests he has. They love to do these things.

What is saddest about ghosts is that they may not know their
child. They expect him to be just as he was when they left him,
and they are easily bewildered, and search for him from room to
room, and hate the unknown boy he has become. Poor, passionate
souls, they may even do him an injury. These are the ghosts that
go wailing about old houses, and foolish wild stories are
invented to explain what is all so pathetic and simple. I know
of a man who, after wandering far, returned to his early home to
pass the evening of his days in it, and sometimes from his chair
by the fire he saw the door open softly and a woman's face
appear. She always looked at him very vindictively, and then
vanished. Strange things happened in this house. Windows were
opened in the night. The curtains of his bed were set fire to.
A step on the stair was loosened. The covering of an old well in
a corridor where he walked was cunningly removed. And when he
fell ill the wrong potion was put in the glass by his bedside,
and he died. How could the pretty young mother know that this
grizzled interloper was the child of whom she was in search?

All our notions about ghosts are wrong. It is nothing so petty
as lost wills or deeds of violence that brings them back, and we
are not nearly so afraid of them as they are of us.

J.M. Barrie