Vieira used the pulpit to propound measures for improving the general and particularly the economic condition of Portugal. His pen was as busy as his voice, and in four notable pamphlets he advocated the creation of companies of commerce, denounced as unchristian a society which discriminated against New Christians (Muslim and Jewish converts), called for the reform of the procedure of the Inquisition and the admission of Jewish and foreign traders, with guarantees for their security from religious persecution. Moreover, he did not spare his own estate, for in his Sexagesima sermon he boldly attacked the current style of preaching, its subtleties, affectation, obscurity and abuse of metaphor, and declared the ideal of a sermon to be one which sent men away " not contented with the preacher, but discontented with themselves."