During the second half of the 16th century, some members of the Society of Jesus began to develop different interpretations around the doctrine of causality within the history of Aristotelian commentaries. Since Aristotle had not proposed an unambiguous definition of cause, the debate grew between the interpreters of his Physics and Metaphysics. Therefore, before Suarez systematized the theories in his Metaphysical Disputations, the professors of the Colleges of Arts and Jesuit Universities discussed the definition of cause (ratio formalis causae). In (...) this essay, I intend to reconstruct the history of causality debate before 1597 when Suarez published his successful metaphysical work and went to Coimbra as a professor of theology. The aim of this essay is to analyse some of the most influential Portuguese professors from Evora and Coimbra and their commentaries on the Aristotle’s works including those proposed by Ignatio de Tolosa (1564), Pedro da Fonseca (1589) and Manuel de Gois (1592). In this way, knowledge of the different views within the Society of Jesus will allow a better understanding of the developments made by Suarez to define causality as principle in the new metaphysical (theological and trinitarian) perspective towards Modernity. (shrink)