In Europe, things were changing. First in ideas: after the terrible wars of religion (between Catholics and Protestants) that ravaged the continent in the previous century and a half, a new consciousness emerged: did not matter more than a man was good and honest, no matter what religion or opinions he had? And, second, if there were differences of opinion, would not it be better to discuss them based on the reason and not go to blows or war? These two elements, tolerance (respect the beliefs of others) and reason (argue logically, clearly, with evidence and, if it were necessary, with scientific experiments) step to a third consensus: if all human beings they are rational, they are equal (The same teaching of Christianity, they are all children of God, but that had not been applied in interreligious wars), and if they are equal, they must be treated equally.