Maurice Merleau-Ponty. Signs. New York, Northwestern University Press, 1964.

Thus does Maurice Merleau-Ponty describe speech in this collection of his important writings on the philosophy of expression, composed during the last decade of his life. For him, expression is a category of human behavior and existence much broader than language alone. He maintains that man is essentially expressive, even prior to speaking: in his silence, gestures, and lived behavior.