Now, Hermes, I must take Amphitryon's form,
To enjoy his wife:
Thou must be Sosia, this Amphitryon's slave;
Who, all this night, is travelling to Thebes,
To tell Alcmena of her lord's approach,
And bring her joyful news of victory.
Merc. But why must I be Sosia?
Jup. Dull god of wit, thou statue of thyself!
Thou must be Sosia, to keep out Sosia;
Who, by his entrance, might discover Jove,