He held a conception altogether his own of the life of plants, and assigned simple souls to animals, which expire with their death.
Having taught the Holy Scriptures from 1880 to 1887, and Semitic languages to the scholastics of his society in Maastricht, he published "Commentarius in epistolam ad Galatas" (Gulpen, 1886); and "De veritate historica libri Judith aliisque ss.
He examined more minutely another work of Loisy's, "Autour d'un Petit Livre", in his "Esame di un opuscolo che gira intorno ad un piccolo libro".
To this demonstration he joins a more complete one, on the Synoptic Gospels, also treated in "Se e come i sinottici ci danno Gesù Cristo per Dio" (Prato, 1903).
The third part was published before the other two, because the author wished with it to render homage to the Immaculate Conception on the fiftieth anniversary of the proclamation of the dogma.
In his treatise on creation and the special creatures, a posthumous work, but of which he left the manuscript completed and prepared, the change made by him regarding the union of the soul with the body, because while he first asserted that the union was only natural and not substantial, now that it is Church teaching that the human nature consists entirely in the synthesis of two elements, that is to say, of the body and of the reasoning soul, he admits that this union is substantial, although he asserts that it is not yet sufficiently determined how one nature can result from these two elements.