Chivalry, a “psy-war” for the time
Plinio Corrêa de Oliveira
In other words, anyone who thought that without the ideal of Crusade and chivalry [they are not the same but are connected ideas] it would have been possible for Europe to close its gates to the Moors would be fantasying. This is not true. Europe would have succumbed.
So that was a sublime ideal that the Church drew from her own treasures – Revelation and Tradition, the Magisterium and Tradition – and with that the Church animated people’s mentalities.