Romanticism is not a style but a temperament, the revolt of feeling against Neoclassical reason. It has no leader and no manifesto, just painters in Madrid, Paris, London, and Dresden who mostly never met and shared a mood: color over line, emotion over restraint, and nature too vast and terrifying to master. It is the Revolutionary age seen from the other side, disillusion, the horror of war, and national feeling.
Neoclassicism, above all David, built a painting like a Roman frieze: clear contour, sculptural figures lit evenly, every edge finished, the brushwork hidden, the mood austere and morally controlled. The Oath of the Horatii lines its heroes up like statues swearing on cue. Reason and order rule, and the cool classical line is the thing that carries the picture.
Romanticism throws the rulebook out. The picture stops being a controlled diagram and becomes a place of feeling and force. Edges dissolve, the brushwork shows, color carries the emotion, and the composition heaves on the diagonal. Géricault piles the dead into a straining pyramid on a raft; Delacroix lets hot color and motion run riot; Goya goes dark; Friedrich shrinks a single figure under an enormous sky; Turner dissolves a ship into light.
That is why this is a temperament and not a tidy style. The subject is no longer civic virtue calmly depicted but emotion, the sublime (nature as terrifyingly grand), the individual, the nation, and the nightmare, painted with visible heat. There is no manifesto and no single look, because there was no movement to issue one.
There was no Romantic manifesto, because there was no Romantic movement to sign one, just painters in Madrid, Paris, London, and Dresden who mostly never met and shared a mood instead of a program. No club, no rulebook, no pope.
The nearest thing to a creed came from the writers and critics. Wordsworth, in the Preface to Lyrical Ballads (added in 1800, expanded 1802), defined poetry as the spontaneous overflow of powerful feelings. Friedrich told painters to shut the bodily eye and paint what they saw within. Delacroix argued for color and imagination in the privacy of his Journal. And Baudelaire pinned it down a generation later: Romanticism lives not in choice of subjects but in a way of feeling.
So the surrogate manifesto is a handful of poems, diaries, and reviews. Friedrich’s lines reach English only as a circulated translation, not a primary document, so treat them as such. No manifesto. A temperament.