The mystic knows in a uniquely graced way these mysteries that we believe and live out as we try to be true to the mystery of our baptism. The very word mystic derives from the word mystery, and God does allow the mystics to see into mysteries, like the mystery of baptism, by way of visions or insights that transcend our usual way of seeing. They see and relate to us the wonder of what is happening within us, for example, as we live out the mysteries of our salvation. The mystics confirm that what we believe is indeed true.
— from Mystics: 10 Who Show Us the Way of God