Confession is like a bridle that keeps the soul which reflects on it from committing sin, but anything left unconfessed we continue to do without fear as if in the dark.
Pride is the utter poverty of soul disguised as riches, imaginary light where in fact there is darkness.
Even though one is well advanced in virtue, should he stop mortifying himself, he soon would lose his modesty and virtue - just as fertile soul quickly becomes dry and arid and produces nothing but thorns and thistles if it is not cultivated.