Thus the castle of each feudal chieftain became a school of chivalry, into which any noble youth, whose parents were from poverty unable to educate him to the art of war, was readily received.
There may be fairies at the bottom of the garden. There is no evidence for it, but you can't prove that there aren't any, so shouldn't we be agnostic with respect to fairies?
Men who hold a theory of the Church which excludes from communion those whom they admit to have the Spirit of Christ simply proclaim that their theory is in flat contradiction to the spiritual fact.