Marsilio Ficino did not write a methodical, complete treatise on ethics, but
the ethical questions are discussed in most of his writings, including his
opus magnum entitled Theologia Platonica. The most important sources for
Ficino’s ethical considerations are Platonic and Neoplatonic texts and this
is strongly reflected in Theologia; one of the aspects of this dependence
regards the nature of virtues: they are seen as unchangeable, indivisible
and that is why they are objective. The main purpose of the paper is to
present the objective character of virtues in Platonic Theology by invoking
their definition, role and status with references to Plato’s works.