 Other features of his theological conceptions are the union he always maintains between moral and dogmatic theology, the latter being the support of the former, and the same treatment being applied to both, discussing thoroughly the principle on which the main points of the doctrine rest.From this point of view the last lines of his preface "De justitia et jure" are instructive.In several problems he formed a system of his own, as for instance about faith, the Eucharist, the hypostatic union, etc., and owing to the thorough discussion of the question at issue, his opinion is always to be taken into account.