Abstract
In search of an archaeology of Dostoyevskian belief in the saving power of aesthetic emotion, we propose to focus on a " text " of the political mystique of beautifying places of power in the XVth century: leon Battista Alberti'sDe re aedificatoria (1452), which states in its book VI : " Beauty will obtain, even from bitter enemies, that they moderate their wrath and consent to leave it inviolate ". Architecture would thus have the power to make things inviolable. To grasp the scope of this hope, we need to recall the powers ofornamentum in the Middle Ages, but also its redefinition in the Quattrocento, when the visual arts were reoriented towards the rhetoric of persuasion. It is from this perspective that we offer an intellectual portrait of Alberti's humanist ambition, reading at the same time the artist's self-portrait as an acrobat in the Vita Leonis Baptistae Albertis and his " Entretiens sur la tranquillité de l'âme ", the De aedificatoria and the tribulations of ugliness portrayed in the political fable of Momus. What emerges is a more restless conception of the political purpose of the humanists' art of building, which did not wait for Machiavelli to work on its own denigration.