This thesis examines the tension that characterizes the thinking of the first German Romantic authors situated between (kantian) critical consciousness, which prohibits our access to absolute truth, and the (hegelian) desire for synthesis which presumes to lead us there. In this context, art emerges as a way of expressing the absolute precisely in opposition to the objective clarity intended by the subject of knowledge. Outside the traditional form of classicism and bringing with it the trace of modern reflection, art is genial in that its creation does not depend upon obedience to pre-existing rules. In turn, criticism leaves its evaluative paradigm, based on norms, and becomes philosophical. It therefore forces the transformation of the contact with classical antiquity, now fragmented, and points to the new vanguard, which surrenders the concept of totality. Irony and allegory are emblematic of this break, which shows the discontinuity of sign and sense in the modern era. Using this language means experiencing the love between art and philosophy, in contrast to the separation that has existed between them since Plato. This quietness in time occurred at the turn of the XVIII to the XIX Century in the works of a group of young writers led by Friedrich Schlegel at the origin of Romanticism, forging a philosophy of art that is also an art of philosophy.