EN
The paper deals with three different concepts of Divine knowledge (Dominican's, Jesuits', Leibniz's), as well as with the relationships of these doctrines to the problem of self-determination and to the Divine choice of the best possible worlds. Firstly, three different concepts of Divine knowledge are explained and the emphasis is put on the impact of the scholastic's tradition on Leibniz's conception of Divine knowledge. Secondly, some relations and links among the three different concepts of Divine knowledge and the doctrine of self-determination are brought to light and evaluated. Thirdly, the author shows how strongly was Leibniz's concept of the 'necessitas moralis Dei ad optimum' inuenced by the the Sevillian Jesuits' school.