46 And so both in every action, and especially in the demand for a bishop, by whom [as a pattern] the life of all is formed; malignity ought to be absent; so that the man who is to be elected out of all, and to heal all, may be preferred to all by a calm and peaceful decision. For “the meek man is the physician of the heart.” And the Lord in the Gospel called Himself this, when He said: “They that be whole need not a physician, but they that are sick.”
Source: Letters (New Advent)