I've copied this poem from the book "Nonviolent Communication – A Language of Life". The book is written by Marshall Rosenberg, the author of the poem is unknown.

Always a mask

Held in the slim hand whitely

Always she had a mask before her

face–

Truly the wrist

Holding it lightly

Fitted the task:

Sometimes however

Was there a shiver,

Fingertip quiver,

Ever so slightly–

Holding the mask?

For years and years and years I

wondered

But dared not ask

And then–

I blundered,

Looked behind the mask,

To find

Nothing–

She had no face.

She had become

Merely a hand

Holding a mask

With grace.