The Enarrations, or Expositions, on the Psalms

⁵ Since the Psalm says, “Behold, how good and how pleasant is it, that brethren should dwell together in one,” why then should we not call Monks so? For Monos is one. Not one in any manner, for a man in a crowd is one, but though he can be called one along with others, he cannot be Monos, that is, alone, for Monos means “one alone.” They then who thus live together as to make one man, so that they really possess what is written, “one mind and one heart,” many bodies, but not many minds; many bodies, but not many hearts; can rightly be called Monos, that is, one alone....