Gladstone was a demagogue: Disraeli a mystagogue.

It is simply common sense, combined with uncommon courage, which includes uncommon honesty and uncommon patience; and if you will be brave, honest, patient, and rational, you will need no mystagogues to tell you what in science to believe and what not to believe; for you will be just as good judges of scientific facts and theories as those who assume the right of guiding your convictions.

Ils en avoient sans doute besoin, pour ajouter foi à toutes les explications des mystagogues: elles rouloient sur le massacre de Bacchus par les Titans," &c.Recherches sur les Mystères du Paganisme, tom. ii.