“Poetry Fetter'd. Fetters the Human Race. Nations are Destroy'd, or Flourish, in proportion as Their Poetry, Painting, and Music are Destroy'd or Flourish!”

Quoted by Plutarch, De gloria Atheniensium 3.346f http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A2008.01.0234%3Astephpage%3D346f.
Variant translations:
Painting is silent poetry, and poetry is painting with the gift of speech.
Painting is silent poetry, poetry is eloquent painting.
See also: Ut pictura poesis

Aphorism 7
Les Caractères (1688), Des Ouvrages de l'Esprit
Context: There are certain things in which mediocrity is intolerable: poetry, music, painting, public eloquence. What torture it is to hear a frigid speech being pompously declaimed, or second-rate verse spoken with all a bad poet's bombast!

Whether the Athenians were more Warlike or Learned, 3
Bartlett's Familiar Quotations, 10th ed. (1919)

Education: What Knowledge Is of Most Worth?
Essays on Education (1861)

Source: Pensées Philosophiques (1746), Ch. 3, as quoted in Selected Writings (1966) edited by Lester G. Crocker

A Treatise on Painting (1651); "The Paragone"; compiled by Francesco Melzi prior to 1542, first published as Trattato della pittura by Raffaelo du Fresne (1651)
Context: Painting is poetry which is seen and not heard, and poetry is a painting which is heard but not seen. These two arts, you may call them both either poetry or painting, have here interchanged the senses by which they penetrate to the intellect.

The Details interview with Jay Ruzesky (Winter 2008)

Reported in, Bernard, J. F., Talleyrand: A Biography. (1973), p. 592

1989