[A pastor] must die to all passions of the flesh and by now lead a spiritual life.

He must have put aside worldly prosperity;

he must fear no adversity,

desire only what is interior...

He is quickly moved of a compassionate heart to forgive...

He so studies to live as to be able to water the dry hearts of others...

By his practice and experience of prayer he has learned already that he can obtain from the Lord what he asks for.

- Gregory the Great