“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 the minds of men.” TruthKnowledgeTheologyCatholicismPhilsophy Book:Summa Contra Gentiles: Volumes 1-4 in Five Books Source: Summa Contra Gentiles: Volumes 1-4 in Five Books