Guardian Angels

From Fr Hardon archives:
You said every baptized person has a Guardian Angel. What about the non-baptized, or non-Christians?
We believe that everybody is a child of God. Then why did God not give them also a Guardian Angel?
Well, in theology we have our different degrees of certitude. Different levels of being sure that something is true. The Church does teach, she does teach that every human person from conception has a Guardian Angel. The Church teaches it. But on everything that the Church teaches has been revealed, revealed by God. In other words, whatever the Church teaches we call doctrine. But only revealed doctrines are called dogmas. It is by dogmas that every baptized person has a Guardian Angel. It is however, by the Church’s teaching, that everyone, I repeat, from conception, has a Guardian Angel. In other words, the degree of certitude, is higher regarding Christians having a Guardian Angel, than every human being. I repeat, from conception, has a Guardian spirit.