Who said "The Loneliness One dare not sound."?

This quote is attributed to Emily Dickinson.

The Loneliness One dare not sound. - Emily Dickinson

"The Loneliness One dare not sound."

Emily Dickinson

Poet American 1830–1886

"Hope is the thing with feathers that perches in the soul."

"Tell all the truth but tell it slant."

"I dwell in Possibility."

"Because I could not stop for Death, he kindly stopped for me."