“And those people should not be listened to who keep saying the voice of the people is the voice of God, since the riotousness of the crowd is always very close to madness.”
Nec audiendi qui solent dicere, vox populi, vox Dei, quum tumultuositas vulgi semper insaniae proxima sit.
Variant translation: We should not listen to those who like to affirm that the voice of the people is the voice of God, for the tumult of the masses is truly close to madness.
Works, Epistle 127 (to Charlemagne, AD 800)