Who said "The truth is that we do not know until we have said it."?

This quote is attributed to Wallace Stevens.

The truth is that we do not know until we have said it. - Wallace Stevens

"The truth is that we do not know until we have said it."

Wallace Stevens Knowledge

Poet American 1879–1955

"The only emperor is the emperor of ice-cream."

"One must have a mind of winter to regard the frost and the boughs of the pine trees crusted with snow."

"The imagination is man's power over nature."

"After the final no there comes a yes and on that yes the future world is built."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."