"The study of truth requires a considerable effort—which is why few are willing to undertake it out of love of knowledge—despite the fact that God has implanted a natural appetite for such knowledge in…"

"There are three kinds of good in marriage: faith, offspring, and sacrament."

"It is requisite for the relaxation of the mind that we make use, from time to time, of playful deeds and jokes."

"The state, therefore, which is bound to safeguard the complete well-being of its citizens, would be justified in putting such a man [a heretic] to death, removing him permanently from among men to who…"

"The natural law is nothing else than the rational creature's participation in the eternal law."