Beware lest thou do like mad and foolish people who want to set themselves up to investigate and judge the deeds and habits of the servants of God. He who does this is entirely worthy of severe rebuke. Know that it would not be different from setting a law and rule to the Holy Spirit if we wished to make the servants of God all walk in our own way – a thing which could never be done.
Catherine of Siena, “Letter to a Mantellata of St. Dominic” (Scudder, p. 91)