In the old law, God was praised both with musical instruments, and human voices. But the church does not use musical instruments to praise God, lest she should seem to judaize.
It has become the fashion to talk about Mysticism, even to pose as Mystics, and—need it be said?—those who talk the most on such subjects are those who know the least.
Jerome says (Ep. ad Nepot. lii): "Shun, as you would the plague, a cleric who from being poor has become wealthy, or who, from being a nobody has become a celebrity.