Introduction
Plato's doctrine on beauty : the longing for the eternal
Beauty in Aristotle's writings and in early Neoplatonism
Beauty according to Pseudo-Dionysius the Areopagite : the non-cognitive unification with the beautiful-and-good
The doctrine on beauty in Albert the Great : the implicit aspiration of the beautiful
Beauty in the teaching of Thomas Aquinas : the repose of desire in cognition
The doctrine on beauty according to Nicholas of Cusa : the Iudex pulchritudinis
Conclusion.